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OxbridgeMind TMUA Paper 1 · Q5

Paper 1TrigonometryAlgebra

Find the number of real solutions in the interval 0<θ<5π20<\theta<\dfrac{5\pi}2 of the equation cos⁡2θ+7sin⁡θ=7\cos^2\theta+7\sin\theta=7.

A00
B11
C22
D33
E44

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