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Official 2016 Paper 1 · Q8

Paper 1TrigonometryGeometryFunctions & graphsAlgebra

Find the maximum angle xx in the range 0∘≤x≤360∘0^\circ\le x\le360^\circ which satisfies the equation

cos⁡2(2x)+3sin⁡(2x)−74=0\cos^2(2x)+\sqrt{3}\sin(2x)-\frac{7}{4}=0
A30∘30^\circ
B60∘60^\circ
C120∘120^\circ
D150∘150^\circ
E210∘210^\circ
F240∘240^\circ
G300∘300^\circ
H330∘330^\circ

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