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Question: note very useful trigonometric identities are these sina bsin a...

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NOTE: Very useful trigonometric identities are these: sin(A B)-sin A cos B + sin B cosA, cos(A+B) -COSA cos B-sin A sin B 28. Is the given function odd or even? If neither, determine its odd and even parts. (a) f(x) = 1 +x+x +x + x (b) f(x) sin(x +3) (c) f(x) -sin df(x) sin(2)
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