# Reduction formulae and identities

> Reduction formulae allow us to express trigonometric functions of any angle as functions of an acute angle (between 0° and 90°). Trigonometric identities are equations that are true for all values…

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## Full notes

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## More in Trigonometry

- [Trigonometric equations](https://www.hlayiso.com/grade-11/technical-mathematics/notes/trigonometry/trigonometric-equations) — Previous section
- [All Trigonometry sections](https://www.hlayiso.com/grade-11/technical-mathematics/notes/trigonometry)

## Frequently asked questions

### What will I learn in "Reduction formulae and identities"?

This section covers Reduction formulae and identities as part of Trigonometry in Grade 11 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 "Reduction formulae and identities", are written against the official CAPS curriculum and ATP for Grade 11 Technical Mathematics.

### What should I study after "Reduction formulae and identities"?

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

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