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TMUAmockz Set 1 Paper 1 · Q12

Paper 1Trigonometry

Find the sum of all values of θ\theta in the interval 0∘<θ<180∘0^\circ<\theta<180^\circ that satisfy

cos⁡θ=sin⁡5θ.\cos\theta=\sin5\theta.
A37.5∘37.5^\circ
B225∘225^\circ
C270∘270^\circ
D360∘360^\circ
E315∘315^\circ
F247.5∘247.5^\circ

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