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1.7.21 Use identities to solve equations (A-level only)

1.7.21 Use identities to solve equations (A-level only)

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Question 1

Find all the values of x x\,x in the interval 0°⩽x<360° 0° \leqslant x < 360°\,0°⩽x<360° for which 2cos⁡2x−3sin⁡2x=14cos⁡x2\cos^2 x - 3\sin^2 x = 14\cos x2cos2x−3sin2x=14cosx

Give your answers to 1 decimal place.

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Markscheme

1.7.21 Use identities to solve equations (A-level only) Questions

  1. A Level
  2. /Maths
  3. /1.7.21 Use identities to solve equations (A-level only)

37 exam-style questions on OCR (MEI) A Level Maths 1.7.21 Use identities to solve equations (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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