All the identities you need to know for c3 and c4 proof and other types of questions.
Includes
- Pythagorean identities (3 below)
- Difference of two squares
- Addition type (Compound angle formulae)
- how to find exact values
- Double Angles
- Half Angle formulae
- Triple angle formulae
- Factor Formulae
- The Harmonic Identities
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£3.50