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7.5 Proving Trigonometric Identities

7.5 Proving 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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7.5 Proving Trigonometric Identities Questions

  1. A Level
  2. /Maths
  3. /7.5 Proving Trigonometric Identities

26 exam-style questions on Edexcel A Level Maths 7.5 Proving Trigonometric Identities. Each one has a worked solution and a mark scheme showing where the marks go.

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