Asked by sunday

Evaluate (2sinx)(3sinx) (6cosx)(cosx)
Answered by Steve
2*3*6 sinx*sinx cosx*cosx
36 sin^2(x) cos^2(x)
or
9(2 sinx cosx)^2
9 sin^2(2x)
9/2 (1-cos(4x))
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