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Trigonometry

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Question 3

Find all the solutions, in the interval 0≤x<2π0 \leq x < 2\pi0≤x<2π, of the equation

2cos⁡2x+1=5sin⁡x, 2 \cos^2 x + 1 = 5 \sin x, 2cos2x+1=5sinx,

giving each solution in terms of π\piπ.

[6]
Markscheme

Trigonometry Questions

  1. A Level
  2. /Old Maths
  3. /Trigonometry

10 exam-style questions on Edexcel A Level Old Maths Trigonometry. Each one has a worked solution and a mark scheme showing where the marks go.

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