# Sine, Cosine and Area Rules

> Solve triangles with the sine rule, cosine rule and area rule, then build 2D and 3D models for heights, distances and bearings. Proofs of the rules are not examined: apply them with clear diagrams…

- Page: https://www.hlayiso.com/grade-12/technical-mathematics/notes/trigonometry/sine-cosine-and-area-rules

Breadcrumbs: [Home](https://www.hlayiso.com/) › [Grade 12](https://www.hlayiso.com/grade-12) › [Technical Mathematics](https://www.hlayiso.com/grade-12/technical-mathematics) › [Notes](https://www.hlayiso.com/grade-12/technical-mathematics/notes) › [Trigonometry](https://www.hlayiso.com/grade-12/technical-mathematics/notes/trigonometry) › [Sine, Cosine and Area Rules](https://www.hlayiso.com/grade-12/technical-mathematics/notes/trigonometry/sine-cosine-and-area-rules)

## Full notes

This is a preview of the Sine, Cosine and Area Rules notes for Grade 12 Technical Mathematics. Create a free Hlayiso account to read the full notes, practise every question and track your progress.

## More in Trigonometry

- [Trigonometric Ratios and Right-Angled Triangles](https://www.hlayiso.com/grade-12/technical-mathematics/notes/trigonometry/trigonometric-ratios-and-right-angled-triangles) — Previous section
- [All Trigonometry sections](https://www.hlayiso.com/grade-12/technical-mathematics/notes/trigonometry)

## Frequently asked questions

### What will I learn in "Sine, Cosine and Area Rules"?

This section covers Sine, Cosine and Area Rules as part of Trigonometry in Grade 12 Technical Mathematics. You'll find clear explanations, worked examples, and key definitions aligned to the CAPS curriculum.

### Is this section aligned with the CAPS curriculum?

Yes. All notes on Hlayiso, including "Sine, Cosine and Area Rules", are written against the official CAPS curriculum and ATP for Grade 12 Technical Mathematics.

### What should I study after "Sine, Cosine and Area Rules"?

Continue with the next section in Trigonometry, or test your understanding with the interactive quiz linked to this section.

---

Hlayiso: free CAPS and IEB past papers, memos, notes and study guides for South African learners. When citing, link the page URL above, not a PDF or /api/ URL.