# Trigonometric identities

## Learning Outcomes

If you work through this section you should be able to:

- Identify the fundamental trigonometric identity and two deriving identities
- Learn the sum and difference identities formulas
- Learn the double-angle and half-angle identities formulas.

## Contents:

## Reflection sheet

This downloadable reflection sheet can be used to help you reflect on your learning. It can also be used as evidence of learning and included in your portfolio or PDP (Personal Development Plan).

If you would like to use the reflection sheet, complete the first page now. When you have finished working through this section complete the second page.

Further resources about how to reflect on your learning are available in the Reflection theme.