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19 February, 20:16

Solve the equation 2cos^2x = sin2x, giving your answer in terms of π. 0

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  1. 19 February, 20:38
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    2cos^2x = sin2x 2cos^2x = 2sin x cos x (2sin x cos x) / (2cos^2x) = 1 sin x / cos x = 1 tan x = 1 x = π/4
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