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*******express how i can obtain the below equation into power reducing formula*** 2sin^2(alpha)cos^2(alpha) I get that...

*******express how i can obtain the below equation into power reducing formula***

2sin^2(alpha)cos^2(alpha)

I get that it reduces to 2(1-cos2x/2) (1+cos2x/2) but unsure how to further reduce it

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