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TrigonometryQ&A LibraryProve the identity sin(90°x) + sin(90° - x) = 2 cos x We begin on the left side of the equation by using Sum and Difference Formulas. We can then combine like terms, find all exact values, and simplify (ar = (sin 90° cos x + cos 90° sin x) + sin(90°x) + sin(90° - x) sin O COS X Cos 90° sin x o COS X = 2 sin = 2 COS X = 2 cos xQuestion

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