Dayana H.
asked • 09/08/18Trigonometry
Find the values of P and Q such that
sin 2x + sin x - sin 5x = sin 2x (P + Q cos 3x )
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1 Expert Answer
Use the addition formula: sin x - sin y = 2cos(1/2)(x+y)sin(1/2)(x-y) on the terms sin x - sin 5x.
You will get the answer directly!
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Mark M.
09/08/18