# Compound & Double Angle Identities

> This section expands and compresses a compound angle A± B, and treats a double angle as the special case B=A. The information sheet gives sin(A± B), cos(A± B), sin 2A and the three forms of cos 2A…

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## Full notes

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## More in Trigonometry

- [More Solving Trig Equations](https://www.hlayiso.com/grade-12/mathematics/notes/trigonometry/more-solving-trig-equations) — Previous section
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## Frequently asked questions

### What will I learn in "Compound & Double Angle Identities"?

This section covers Compound & Double Angle Identities as part of Trigonometry in Grade 12 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 "Compound & Double Angle Identities", are written against the official CAPS curriculum and ATP for Grade 12 Mathematics.

### What should I study after "Compound & Double Angle Identities"?

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

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