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Nabla Tuition TMUA Paper 1 · Q5

Paper 1TrigonometryGeometry

An acute angle θ\theta satisfies

sin⁡θ=2cos⁡2θ.\sin\theta=2\cos^2\theta.

Find tan⁡2θ\tan^2\theta.

A17−32\frac{\sqrt{17}-3}{2}
B17−14\frac{\sqrt{17}-1}{4}
C17+14\frac{\sqrt{17}+1}{4}
D17−12\frac{\sqrt{17}-1}{2}
E17+12\frac{\sqrt{17}+1}{2}

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