Question

Verify the following identity. sin? x + cos2x = cos? To transform the left side into the right side, should be changed to and
Use the power-reducing formulas to rewrite the expression as an equivalent expression that does not contain powers of trigono
Express the given product as a sum or difference containing only sines or cosines. sin (4x) sin (2x) sin (4x) sin (2x) = (Sim
0 0
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Answer #1

(1.) sin3c+ cos ex = coses L.H.L. a simbx teosex = sine ti-asinec = 1-simsc = cos²x = R.HILO (21 40 Sim2x cos3x We know that

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