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1 Unit 1: Pure Mathematics A

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Question 116

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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1 Unit 1: Pure Mathematics A Questions

  1. A Level
  2. /Maths
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