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1.7.19 Double angle identities (A-level only)

1.7.19 Double angle identities (A-level only)

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Question 13

Solve, for −180≤x≤180-180 \leq x \leq 180−180≤x≤180, the equation,

2cos⁡2x+7cos⁡x=0 2 \cos 2x + 7 \cos x = 0 2cos2x+7cosx=0
[5]
Markscheme

1.7.19 Double angle identities (A-level only) Questions

  1. A Level
  2. /Maths
  3. /1.7.19 Double angle identities (A-level only)

24 exam-style questions on OCR (MEI) A Level Maths 1.7.19 Double angle identities (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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