Edexcel P3 2020 October — Question 1

Exam BoardEdexcel
ModuleP3 (Pure Mathematics 3)
Year2020
SessionOctober
TopicAddition & Double Angle Formulae
  1. Solve, for \(0 \leqslant x < 360 ^ { \circ }\), the equation
$$2 \cos 2 x = 7 \cos x$$ giving your solutions to one decimal place.
(Solutions based entirely on graphical or numerical methods are not acceptable.)
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