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1.8.8 Proofs with trigonometric identities

1.8.8 Proofs with trigonometric identities

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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
[2]
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1.8.8 Proofs with trigonometric identities Questions

  1. A Level
  2. /Maths
  3. /1.8.8 Proofs with trigonometric identities

38 exam-style questions on AQA A Level Maths 1.8.8 Proofs with trigonometric identities. Each one has a worked solution and a mark scheme showing where the marks go.

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