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The Cosine Rule The Cosine Rule (also called the Law of Cosines) is a generalisation of the Theorem of Pythagoras. While Pythagoras only works in right-angled triangles, the Cosine Rule works in all…
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This section covers The Cosine Rule as part of Trigonometry: Sine, Cosine and Area Rules in Grade 12 Mathematics. You'll find clear explanations, worked examples, and key definitions aligned to the CAPS curriculum.
Yes. All notes on Hlayiso, including "The Cosine Rule", are written against the official CAPS curriculum and ATP for Grade 12 Mathematics.
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