(cos^3x)(sinx)

find the answer to the equation using trig identities
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1 Answer

cos3(x)sin(x)=sin(x)cos(x)cos2(x)=

¼sin(2x)(1+cos(2x)), because:

sin(2x)=2sin(x)cos(x), sin(x)cos(x)=½sin(2x); and cos(2x)=2cos2(x)-1, cos2(x)=½(1+cos(2x))

by Top Rated User (1.2m points)

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