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3.4.7 Trigonometry (A-level only)

3.4.7 Trigonometry (A-level only)

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Question 4

Prove the identity:

cos⁡2xcos⁡x+sin⁡x≡cos⁡x−sin⁡x \frac{\cos 2x}{\cos x + \sin x} \equiv \cos x - \sin x cosx+sinxcos2x​≡cosx−sinx
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3.4.7 Trigonometry (A-level only) Questions

  1. A Level
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38 exam-style questions on CCEA A Level Maths 3.4.7 Trigonometry (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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