AQA A Level Maths: Pure复习笔记5.6.1 Compound Angle Formulae
Compound Angle Formulae
What are the compound angle formulae?
- There are six compound angle formulae (also known as addition formulae), two each for sin, cos and tan:
- For sin the +/- sign on the left-hand side matches the one on the right-hand side
Exam Tip
- All these formulae are in the formulae booklet – you don't have to memorise them.
Worked Example
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