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Re Which of the following expressions are identities and which are equations? (a) cos 3x - 3 cos x 4 cos x Click for List

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Re Which of the following expressions are identities and which are equations? (a) cos 3x - 3 cos x 4 cos x Click for List sin(x y) (b) cota coty Click for List sin x siny (c) sin x 4 3 cos- a 2-cos 2x Click for List

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