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1.5 Trigonometry

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Question 84

It is given that sin⁡y=−0.2\sin y = -0.2siny=−0.2 and 180∘<y<270∘180^{\circ} < y < 270^{\circ}180∘<y<270∘

Find the exact value of cos⁡y\cos ycosy

[3]

1.5 Trigonometry Questions

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