SOLUTION: Use the square identities to simplify 2(sin^2x)(sin^2x). {{{A.3+4cos(2x)+cos(4x)}}} {{{B.3-4cos(2x)+cos(4x)}}} {{{C.3-4cos(2x)-cos(4x)}}} {{{D.3+4cos(2x)-cos(4x)}}}

Question 930754: Use the square identities to simplify 2(sin^2x)(sin^2x).

Answer by rcdodds(6) (Show Source): You can put this solution on YOUR website!
The trigonometric identity says that sin^2(x) = 1/2 - cos(2x)/2
Substituting this into the original equation and solving using trigonometric algebra gives us...

We also know from this identity that cos^2(2x)/2 = 1/4 + cos(4x)/4

So we know that our answer is B
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