Express sin x/2 cos 3x/2 as a sum or difference of trigonometric function.
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difference formulas for sine in a similar manner. ... Express each of the following products as a sum or difference: a. b. ... sin 5x sin 2x sin 4x cos x= [sin ( 4x+x)+sin (4x-x)]= (sin 5x+sin 3x). 1. 2. 1. 2 ...........
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