(a) Prove that 1- cos 2.x NT = tan x, sin 2.x (b) Hence solve, for 0 < 0 < 2n, 1- cos 20 3sec? 0 – 7 = sin 20 Give your answers in radians to 3 decimal places, as appropriate.

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A: given that 2sin2θ=cos2θ to prove that tan2θ=0.5 proceed as follows  2sin2θcos2θ=1tan2θ=12tan2θ=0.5

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