# Mathematics Grade 12 Paper 2 Western Cape Mock 2016 Memo

> Grade 12 Mathematics Paper 2 memorandum from the Western Cape Mock Exam 2016, 11 pages. Read online or download the free PDF.

- Page: https://www.hlayiso.com/library/grade-12-mathematics-2016-western-cape-mock-exam-memorandum-paper-2/d15fb111-b11f-4eff-ba13-a935a2ddc1d9
- Updated: 2026-09-28
- Subject: Mathematics
- Grade: Grade 12
- Document type: Memorandum
- Year: 2016
- Exam period: Western Cape Mock Exam
- Paper: 2
- Curriculum: CAPS
- Pages: 11

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## About this document

Mathematics · Grade 12 · Western Cape Mock Exam · 2016. Memorandum, 11 pages. Read online or download the PDF.

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### Page 1

testpapers.co.za
SEPTEMBER P/ V2 2016              MARKING/ NASIEN MEMORANDUM
NOTE:
• If a candidate answers a question TWICE, only mark the FIRST attempt.
• If a candidate has crossed out an attempt of a question and not redone the question, mark the crossed out
version.
• Consistent accuracy applies in ALL aspects of the marking memorandum.
• Assuming answers/values in order to solve a problem is NOT acceptable..
NOTA:
• As 'n kandidaat 'n vraag TWEEKEER beantwoord, merk slegs die EERSTE poging.
• As 'n kandidaat 'n poging om die vraagte beantwoord, doodgetrek het en nie dit oorgedoen het nie, merk
      die doodgetrekte poging.
• Volgehoue akkuraatheid word in ALLE aspekte van die Nasienmemorandum toegepas.
• Aanvaarding van antwoorde/waardes om 'n probleem op te los, is ONaanvaarbaar.
QUESTION/ VRAAG1
Q1                                                                             DESCRIPTORS/ BESKRYWERS MARK/
                                                                                                                           PUNT
1.1                                                         Aantal leerders          Kum f
                                     Tyd in minute
                                                             Number of               Cum f
                                    Time in minutes
                                                               learners                            ✓✓ A/CA
                                         5 < t  10               160                 160          Cum frequency
                                                                                                   values/ Kum.frek.
                                         10 < t  15              150                 310          waardes
                                         15 < t  20              110                 420
                                         20 < t  25               60                 480
                                         25 < t  30               45                 525
                                         30 < t  35               15                 540                                  (2)
1.2
                                   550

                                   500                                                             ✓ anchor point (5;0)/
                                   450                                                             Begin punt

                                   400                                                             ✓ use cum freq/

         Kummulatiewe frekwensie
                                   350                                                             gebruik kum.frek.
                                   300
                                                                                                   ✓ use upper limits/
                                   250                                                             boonste limiete
                                   200
                                                                                                   ✓ smooth curve/
                                   150                                                             gladde kurwe
                                   100

                                    50

                                     0
                                         0     5       10   15      20     25   30     35    40
                                                              Tyd in minute                                                (4)
1.3   average time = 14,95 min                                                                     ✓✓ ans/ antw            (2)
1.4   SD = 6,89                                                                                    ✓✓ ans/ antw            (2)
1.5   > 14,95 + 6,89 = 21,84                                                                       ✓ 21,84
       540 – 442 = 98 learners                                                                    ✓ accept/ aanvaar
                                                                                                   440 – 445
                                                                                                   ✓ accept/aanvaar         (3)
                                                                                                   95 – 100                [13]

### Page 2

QUESTION/ VRAAG 2
Q2         SUGGESTED ANSWER/ VOORGESTELDE ANTWOORD     DESCRIPTORS/ BESKRYWERS       MARK/
                                                                                     PUNT
2.1   a = –22,70544202                                ✓ a- value/waarde
      b = 0,1989294404                                ✓ b-value/waarde
      𝑦 = −22,71 + 0,20𝑥                              ✓Equation/Vergelyking           (3)
2.2   r = 0.8496991 = 0,85                            ✓ 𝑟                              (1)
2.3   𝑦 = −22,71 + 0,20(350)                          ✓ Substitute/Instel
      y = 47,29 = 47                                  ✓ Ans/Antw                       (2)
2.4   a positive strong correlation/ sterk positief   ✓ Ans/Antw                     (1) [7]
QUESTION/ VRAAG 3
Q3         SUGGESTED ANSWER/ VOORGESTELDE ANTWOORD     DESCRIPTORS/ BESKRYWERS       MARK/
                                                                                     PUNT
3.1   𝐴𝐵 = √(4 + 2)2 + (9 − 1)2                       ✓ Subst in correct
                                                      formula/Instel in korrekte
          = √62 + 82                                  formule
          = √100                                      ✓ Ans/Antw                      (2)
          = 10
3.2   𝐴𝐵 = 𝐵𝐶 = 10                                    ✓𝑥 value/waarde
      𝑦 𝑣𝑎𝑙𝑢𝑒 = 9 + 10 BC ∥ 𝑦 − 𝑎𝑥𝑖𝑠                  ✓𝑦 − value/waarde               (2)
      𝐶(4; 19)
3.3      𝑥1 + 𝑥2 𝑦1 + 𝑦2                               ✓Subst in correct formula/
      𝐾(           ;       )
             2         2                              Instel in korrekte formule
         4 − 2 19 + 1                                 ✓Ans/ Antw
      𝐾(         ;       )
           2         2
      𝐾( 1 ; 10)                                                                      (2)
3.4          𝑦2 − 𝑦1    19 − 1 18                     ✓𝑚
      𝑚=             =        =   =3
            𝑥2 − 𝑥1      4+2    6                     ✓Subst A or C point into
      𝑦 − 𝑦1 = 𝑚(𝑥 − 𝑥1 )                             correct formula/ Stel A of C
      𝑦 − 1 = 3(𝑥 + 2)                                in korrekte formule
      𝑦 = 3𝑥 + 6 + 1                                   ✓Ans/Antw
      𝑦 = 3𝑥 + 7
                                                                                      (3)
3.5                      𝑚𝐴𝐶 = 3                      ✓ tan  = m
      𝐴𝑛𝑔𝑙𝑒 𝑜𝑓 𝑖𝑛𝑐𝑙𝑖𝑛𝑎𝑡𝑖𝑜𝑛 = tan−1(3)                 ✓ of inclination/
                         = 71,57°                     Inklinasie
                         ∴ 𝜃 = 90° − 71,57°           ✓ Comple ’s/ Kompl 
                         = 18,43°                     ✓Ants/Antw
      OR                                              OR ✓correct trig ratio/
      In the right-angled triangle:                   korrekte trig verhouding
                 6                                    ✓✓ correct values /korrekte
      tan 𝜃 =
                18                                    waardes
      𝜃 = 18.43°                                      ✓Ans/ Antw
                                                                                      (4)
3.6                  1                                ✓correct formula/ korrekte
      Area ABC =      . BC . h                      formule
                     2
                                                      ✓base/basis = 10
                     1
                    = (10)(6)                         ✓ height/hoogte = 6
                     2                                ✓ ans/ antw
                    = 30 sq units                                                      (4)
                                                                                      [17]

### Page 3

QUESTION/ VRAAG4

Q4             SUGGESTED ANSWER/ VOORGESTELDE ANTWOORD    DESCRIPTORS/ BESKRYWERS       MARK/
                                                                                        PUNT
4.1   OC  tangent            [r  tangent]              ✓ both/ beide S’s
      CE  tangent            [r  tangent]                                              (2)
       O, C and E straight line [adjacent s = 180°]    ✓R
4.2          −2 − 0                                      ✓ Substitute/ Vervang C
      𝑚𝑂𝐶 =           = −2
              1−0                                        ✓Ans/ Antw
                                                                                         (2)
4.3   𝑚𝐶𝐷 = −2
      𝑦2 − 𝑦1                                            ✓ 𝑚𝑡𝑎𝑛𝑔𝑒𝑛𝑡/𝑟𝑎𝑎𝑘𝑙𝑦𝑛
              = −2
      𝑥2 − 𝑥1
      −6 + 2                                             ✓ Substitute( any point)
              = −2                                                                       (2)
       𝑡−1                                               correct equation/ Vervang
      −2(𝑡 − 1) = −4                                     enige punt
      𝑡−1=2
      𝑡=3
4.4               1
       𝑚𝑡𝑎𝑛𝑔𝑒𝑛𝑡 =
                  2                                      ✓ 𝑚𝑡𝑎𝑛𝑔𝑒𝑛𝑡/𝑟𝑎𝑎𝑘𝑙𝑦𝑛
      𝐴𝐶: 𝑦 − 𝑦1 = 𝑚(𝑥 − 𝑥1 )
              1                                          ✓ Substitute( any point)
      𝑦 + 2 = (𝑥 − 1)
              2                                          correct equation/ Vervang
          1     1                                        enige punt
      𝑦 = 𝑥− −2
          2     2
          1     5                                        ✓ Answer/ Antw
      𝑦= 𝑥−
          2     2
                                                                                         (3)
4.5   D is the midpoint of circle
                        1+𝑥
      𝑥 − 𝑐𝑜𝑜𝑟𝑑𝑖𝑛𝑎𝑡𝑒:          =3
                           2                             ✓ 𝑥 value/ waarde
      1+𝑥 =6
      𝑥=5                                                ✓ 𝑦 value/ waarde               (2)
                        𝑦−2
      𝑦 − 𝑐𝑜𝑜𝑟𝑑𝑖𝑛𝑎𝑡𝑒:          − −6
                           2
      𝑦 − 2 = −12
      𝑦 = −10
      𝐸(5; −10)
4.6   𝐴𝐶̂ 𝐷 = 90°     [𝑟𝑎𝑑𝑖𝑢𝑠 ⊥ 𝑡𝑎𝑛𝑔𝑒𝑛𝑡]                 ✓AE diameter/ middellyn
      ∴ 𝐴𝐸 𝑖𝑠 𝑡ℎ𝑒 𝑑𝑖𝑎𝑚𝑒𝑡𝑒𝑟  ACE                         ✓AE = 10
      𝐴𝐸 = √(5 − 5)2 + (0 + 10)2
                                                         ✓Radius = 5
      𝐴𝐸 = √0 + 100
      𝐴𝐸 = 10
                                                         ✓Midpnt
                  1
      ∴ 𝑟𝑎𝑑𝑖𝑢𝑠 = (10) = 5
                  2                                      Equation of Circle/Vegel van
                  5 + 5 −10
      𝑀𝑖𝑑𝑝𝑛𝑡𝐴𝐸 (         ;      )                        sirkel
                     2       2                           ✓Point/ Punt
      ∴ 𝐶𝑒𝑛𝑡𝑟𝑒 𝑜𝑓𝑐𝑖𝑟𝑐𝑙𝑒 (5;-5)
                                                         ✓𝑟 2                           (6)
      Equation of circle ACE: (𝑥 − 5)2 + (𝑦 + 5)2 = 25
4.7   𝐶𝑖𝑟𝑐𝑙𝑒 𝑐𝑒𝑛𝑡𝑟𝑒 𝑂: 𝑥 2 + 𝑦 2 = 5                     ✓ 𝑟2 = 5
      𝐷𝑖𝑎𝑚𝑒𝑡𝑒𝑟 = 2√5                                     ✓Diameter / Middellyn           (4)
      √20 < 𝑟 < √20 + 2√5                                ✓✓Endpoints/ Eindpunte
      2√5 < 𝑟 < 4√5
                                                                                         [21]

### Page 4

QUESTION/ VRAAG 5

Q5               SUGGESTED ANSWER/ VOORGESTELDE ANTWOORD    DESCRIPTORS/ BESKRYWERS   MARK/
                                                                                      PUNT

        (1)2 = 𝑝2 + (𝑜𝑝𝑝)2
        (1)2 − (𝑝)2 = 𝑥 2
        ∴ 𝑥 = √1 − 𝑝2

5.1.1   sin 214°                                           ✓−sin 34°
        = sin(180° + 34°)
        = −sin 34°                                         ✓Ans/ Antw                  (2)
        = −𝑝

5.1.2   cos 34°.cos (-22°) + sin 34°.sin 338°              ✓✓ reduction/ reduksie
        = cos 34° . 𝑐𝑜𝑠22° + sin 34°(−𝑠𝑖𝑛22°)
        = cos 34° . cos 22 ° − sin 34° . sin 22°           ✓ compound angles/
              = cos (34° + 22°)                            saamgestelde hoeke
              = cos 56°
                                                                                       (4)
        ∴= 𝑝                                               ✓ √1 − 𝑝2

5.1.3   cos 68°                                            ✓Double angle/ dubbele
        = cos 2(34°)                                       hoek
        = 2 cos2 34° − 1                                   ✓Ans/ Antw                  (2)
                      2
        = 2 (√1 − 𝑝2 ) − 1
        = 2(1 − 𝑝2 ) − 1
        = 1 − 𝑝2

5.2.1       cos(90ᵒ − 2𝜃) . sin(𝜃) .
        𝑠𝑖𝑛2 (180ᵒ + 𝜃) cos(720° + 𝜃).                     ✓ 𝑠𝑖𝑛2𝜃
                                                           ✓ (−𝑠𝑖𝑛 𝜃)2
             sin 2𝜃 . (sin 𝜃)                              ✓sin2 𝜃
        =                                                  ✓ cos 𝜃
            (−𝑠𝑖𝑛𝜃)2 . (𝑐𝑜𝑠𝜃)

            2 sinθ 𝑐𝑜𝑠𝜃. 𝑠𝑖𝑛 𝜃                             ✓2 sinθ 𝑐𝑜𝑠𝜃
        =
               𝑠𝑖𝑛2 𝜃. 𝑐𝑜𝑠𝜃.
                                                           ✓2                         (6)
        =2
5.2.2      1         1                                     𝑐𝑜𝑠 2 𝑥
                −                                                  ✓
        𝑠𝑖𝑛 2𝑥 𝑡𝑎𝑛2 2𝑥
           2
                                                           𝑠𝑖𝑛2 𝑥
             1      𝑐𝑜𝑠 2 2𝑥
        =         −
          𝑠𝑖𝑛2 2𝑥 𝑠𝑖𝑛2 2𝑥
                                                           1 − 𝑐𝑜𝑠 2 2𝑥
            1 − 𝑐𝑜𝑠 2 2𝑥                                                ✓
        =                                                    𝑠𝑖𝑛2 2𝑥
              𝑠𝑖𝑛2 2𝑥

          𝑠𝑖𝑛2 2𝑥                                          ✓ sin2 2𝑥
        =         =1                                       ✓Ans/ Antw                 (4)
          𝑠𝑖𝑛2 2𝑥

                                                                                       [18]

### Page 5

QUESTION/ VRAAG 6

Q6                  SUGGESTED ANSWER/ VOORGESTELDE ANTWOORD                             DESCRIPTORS/      MARK/
                                                                                         BESKRYWERS       PUNT
6.1                                                                                 ✓ shape / vorm
                                   y                                                ✓ endpoints/
                               1
                                       g                                            eindpunte
                                                                                                          (3)
                                                                                    ✓ intercepts with
                                                          f
                                                                                    axes/ snypunte met
                                                                                x
                                                                                    asse
       -90    -60      -30   0             30   60   90       120   150     180

                                                                    (180° ; -0,5)

      (-90° ; -0,87)         -1

6.2                                                                                 ✓ equate the
      − sin 2𝑥 = cos(𝑥 − 60°)
                                                                                    equations /
      − sin 2𝑥 = sin(90° − (𝑥 − 60°))                                               vergelyking
      − sin 2𝑥 = sin(150° − 𝑥)                                                      ✓ co-functions/ ko-
                                                                                    funksies
      sin(180° + 2𝑥) = sin(150° − 𝑥)
      180° + 2𝑥 = 150° − 𝑥 + 𝑛(360°), 𝑛𝜖 𝑍                                          sin(180° + 2𝑥)✓
      3𝑥 = −30 + 𝑛(360), 𝑛 ∈ 𝑍                                                      ✓ ✓ Ans/ Antw          (5)
      𝑥 = −10° + 𝑛(120°)

6.4                                                                                 ✓ Inequality/          (3)
      −10° ≤ 𝑥 ≤ 110°
                                                                                    Ongelykheid
                                                                                    ✓✓Ans/ Antw
6.4   𝑦 = −sin(2𝑥 + 30°)                                                            ✓ ✓ Ans/ Antw
                                                                                                           (2)
6.5   𝑔 must shift 30° right                                                        ✓ 30°
                                                                                    ✓ right/regs           (2)
                                                                                                          [15]

### Page 6

QUESTION/VRAAG 7
Q7         SUGGESTED ANSWER/ VOORGESTELDE ANTWOORD    DESCRIPTORS/ BESKRYWERS   MARK/
                                                                                PUNT
7.1
                𝐷𝐶
      cosθ =
                 𝑝

      p. cosθ = 𝐷𝐶                                   ✓ DC

           𝐵𝐷          𝐷𝐶
                   =                                 ✓ Subst in Sine Rule/
      sin(90° − 𝜃)   sin 2𝜃
                                                     Sinus reël
       𝐵𝐷         𝐷𝐶
            =                                        ✓Simplification/
      cos 𝜃   2sin 𝜃. cos 𝜃
                                                     Vereenvoudig
      𝐵𝐷          𝐷𝐶.cos 𝜃
           =                   but𝑝 𝑐𝑜𝑠𝜃 = 𝐷𝐶
       1        2sin 𝜃.cos 𝜃
                                                     ✓Subst/ vervang DC
      𝐵𝐷   𝑝𝑐𝑜𝑠 𝜃. cos 𝜃
         =
       1   2sin 𝜃. cos 𝜃
                                                     ✓ Simplification/
               𝑝𝑐𝑜𝑠𝜃                                 Vereenvoudig               (5)
      𝐵𝐷 =
               2𝑠𝑖𝑛𝜃
7.2               𝐴𝐶                                 ✓Substitution /Instel
      sin 30° =
                   𝑝

      3 sin 30° = 𝐴𝐶                                 ✓Ans/Antw

      ∴ 𝐴𝐶 = 1,5 𝑚                                                              (2)

7.3            3 cos 30° 3 1   √3
      𝐵𝐷 =              = ( )=
               2 sin 30° 2 √3   2
                                                     ✓BD
           2      2      2
      𝐴𝐵 = 𝐴𝐷 + 𝐵𝐷 − 2𝐴𝐷. 𝐵𝐷𝑐𝑜𝑠 𝐴𝐷𝐵
                          2                          ✓Cos rule/reël
                   √3          √3                    ✓Subst / vervang
          = 32 + ( ) − 2(3) ( ) cos 70°
                    2           2
                 3                                   ✓AB2
          = 9 + − 3√3 cos 70 °
                 4
          = 7.97
                                                     ✓AB                         (5)
      𝐴𝐵 = 2.82 metres

                                                                                 [12]

### Page 7

EUCLIDEAN GEOMETRY/ EUKLIDIESE MEETKUNDE
✓S – Statement/ Bewering

✓R – Reason/ Rede

✓S/R – Statement + Reason/ Bewering + Rede

QUESTION/ VRAAG 8

8.1

Q8                  SUGGESTED ANSWER/ VOORGESTELDE ANTWOORD                     DESCRIPTORS/   MARK/
                                                                                 BESKRYWERS    PUNT
8.1.1   BÂE = 90°            in semi circle/ in halwesirkel               ✓ S ✓R             (2)

8.1.2    Ê1 = 80 °    opp angles cyclic quad/ teenoorst e koordevierhoek   ✓ S ✓R             (2)

8.1.3   D1 =45°          ext of ∆ FED/ buitevan ∆ FED                      ✓ S ✓R             (2)

8.2     B̂1 = 35°            Interior  of ∆                                 ✓ S✓R
                                                                             ✓S
        𝐹̂ = 35°              given
                                                                             ✓R                 (4)
        ∴ 𝐴𝐵 ∥ 𝐶𝐹             Alternate angles =
                                                                                               [10]

### Page 8

QUESTION/ VRAAG 9

Q9                SUGGESTED ANSWER/ VOORGESTELDE ANTWOORD                  DESCRIPTORS/        MARK/
                                                                            BESKRYWERS         PUNT
9.1

                                                                      Consider other proofs
                                                                      as well/ Oorweeg ander
                   G 1          H                                     bewyse ook

      Constr./Konstr.: Measure/Meet AG = DE on/op AB and/en AH = DF   ✓constr/ konstr.

      on/op AC . Draw/Trek GH
      Proof/ Bewys:
      𝐴̂ = D
           ̂ …given/gegee
      AG = DE …Constr./ konstr
      AH = DF …Constr./ konstr
      ∴ ∆𝐺𝐴𝐻 ≡ ∆𝐸𝐷𝐹 (𝑠;  ; 𝑆)                                        ✓S✓R
        ̂1 = 𝐸̂
      ∴ 𝐺
      But / maar ̂𝐵 = 𝐸̂ …given/gegee
        ̂1 =𝐵̂                                                         ̂1 =𝐵̂
                                                                      ✓𝐺
      ∴ 𝐺
      ∴ GHll BC     … corresp∠𝑠 = / ooreenk.∠𝑒 =                      ✓S&R
          AG AH
      ∴                                                              ✓S
          AB AC
          DE DF                                                       ✓S&R
      ∴        …        AG = DE ; AH = DF
          AB AC

                                                                                                (7)

### Page 9

9.2                                 C

                                            F

                             B
                                                                    E

                                     D

                     A

9.2.1         ̂1 = 𝐸
           1) 𝐵    ̂1 …tan-chord thm/ raakl- koordstelling                     ✓S&R
              ̂    ̂1 …equal chords; equal ’s /gelyke koorde gelykee
              𝐸2 = 𝐸                                                                   (3)
                                                                               ✓S
                ̂2 = 𝐵
              ∴ 𝐸     ̂1

9.2.2   In ∆𝐵𝐷𝐴 and / en ∆𝐸𝐹𝐵 :
                ̂ A = 𝐹̂ …ext of cyclic quad/ buitevan koordevierhoek
               BD                                                              ✓✓S&R

                ̂2 = 𝐵
              ∴ 𝐸    ̂1          Proven
                                                                               ✓S
        ∴ ∆𝐵𝐷𝐴lll∆𝐸𝐹𝐵 (;;)                                                          (4)
                                                                               ✓S&R
                                          OR
        In ∆𝐵𝐷𝐴 and / en ∆𝐸𝐹𝐵 :
               ̂ A = 𝐹̂
           1) BD             … ext of cyclic quad/ buitevan koordevierhoek   ✓S&R
             ̂1 = 𝐸
          2) 𝐵    ̂1 … tan-chord thm/ raakl- koordstelling
         ̂    ̂1
         𝐸2 = 𝐸        … equal chords; equal ’s /gelyke koorde gelykee       ✓S&R
             ̂2 = 𝐵
           ∴ 𝐸    ̂1                                                           ✓S &R
           𝐴̂ = 𝐵
                ̂3        … sum of ’s in ∆/ e van ∆
        ∴ ∆𝐵𝐷𝐴lll∆𝐸𝐹𝐵                                                          ✓S &R

9.2.2   𝐵𝐷 𝐷𝐴                                                                  ✓S
           =
        𝐸𝐹 𝐹𝐵
        ∴ 𝐵𝐷. 𝐹𝐵 = 𝐸𝐹. 𝐷𝐴
                                                                               ✓S&R    (2)
        ∴ BD² = DA.EF        … BD = FB
                                                                                       [16]

### Page 10

QUESTION/ VRAAG 10

                                           P                        S

                              D                                F                G
                                               E

                              A                        B                        C

Q10                SUGGESTED ANSWER/ VOORGESTELDE ANTWOORD                   DESCRIPTORS/   MARK/
                                                                              BESKRYWERS    PUNT
10.1.    alt ∠s / verwisselende ∠e; YT ∥ RQ                             ✓R                   (1)

10.2.1   BP 𝐵𝑆
             … Prop. Thm; EF ll PS/ Ewer. Stelling; EF ll PS
         BE 𝐵𝐹                                                          ✓S✓R                 (2)
              𝐵𝑃. 𝐵𝐹
         𝐵𝐸 =
               𝐵𝑆

10.2.2   In ΔBGP and/ en ΔBEG:
                                                                                             (4)
              1) Ĝ1 = P̂1 … Tan chord thm/ Raaklyn koordstelling
                                                                        ✓✓ S&R
              2) Bˆ  Bˆ … common ∠ / gemene∠
                                                                        ✓S &R

              ∴ ∆𝐵𝐺𝑃lll∆𝐵𝐸𝐺 (;;)                                     ✓S &R
                                  OR
         In ΔBGP and/ enΔBEG
             1) Ĝ1 = P̂1 … Tan chord                                   ✓✓ S&R
             2) Bˆ  Bˆ … common ∠ / gemene∠
                                                                        ✓S &R
             3) BGˆ P  BEˆ G … sum of ’s in ∆/ e van ∆

              ∴ ∆𝐵𝐺𝑃lll∆𝐵𝐸                                              ✓S
         𝐵𝐺       𝐵𝑃
              =        …∆𝐵𝐺𝑃lll∆𝐵𝐸𝐺
10.2.3   𝐵𝐸       𝐵𝐺                                                    ✓S
           ∴ BG² = BP.BE
                    𝐵𝑃. 𝐵𝐹                                              ✓S
         𝐵𝐺 2 = 𝐵𝑃.                                                                          (3)
                        𝐵𝑆                                              ✓ Subst
                    2
                𝐵𝑃    . 𝐵𝐹
         𝐵𝐺 2 =
                  𝐵𝑆
           𝐵𝐺 2 𝐵𝐹
         ∴      =
           𝐵𝑃2 𝐵𝑆
                                                                                            [10]

### Page 11

QUESTION/ VRAAG 11

                                                  20 cm

Q11                 SUGGESTED ANSWER/ VOORGESTELDE ANTWOORD       DESCRIPTORS/     MARK/
                                                                   BESKRYWERS      PUNT
11.1.1   FC 4                                                 ✓✓S&R
                    … EF llAD
          20 5                                                ✓answer/antw         (3)
         ∴ FC=16
11.1.2   36 4                                                 ✓DC = 36
                    … DE llAB
         DB 5                                                 ✓✓S&R                 (4)
         ∴ DB= 45                                             ✓answer/antw

                        1
11.2     𝐴𝑟𝑒𝑎 ∆ 𝐸𝐶𝐹 2 .4𝑘. 8. sin 𝐶                           ✓½. 4𝑘. 8. 𝑠𝑖𝑛𝐶
                   =
         𝐴𝑟𝑒𝑎 ∆𝐴𝐵𝐶 1 . 9𝑘. 81. sin 𝐶                          ✓½. 9𝑘. 40.5. 𝑠𝑖𝑛𝐶
                        2
         𝐴𝑟𝑒𝑎 ∆ 𝐸𝐶𝐹 32
                   =                                          ✓ ✓ Answer
         𝐴𝑟𝑒𝑎 ∆𝐴𝐵𝐶   81
                                                                                    (4)

                            TOTAL / TOTAAL: [150]                                  [11]

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