For cos x = * with a terminal side in Quadrant IV and csc y = with a terminal side in Quadrant II. Evaluate 21 and simplify the following: a) sin(x + y) b) tan(x + y)

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Q: 4. Verify that cos = sin x.

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A: (a) sintan-13=sinπ3=32 Hence the exact value is 32.

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A: Trigonometric equation

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A: To find the exact value of the expression whenever it is defined.           cos-1sin 0

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A: Given: sinθ-π3 we know that sinA-B=sinAcosB-cosAsinB                                   ..1

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