http://prntscr.com/9av46p
Do I not divide the 2 in the cos function out to get the answer?? o-0

http://prntscr.com/9av46p
Do I not divide the 2 in the cos function out to get the answer?? o-0

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how did you get those two answers?

I don't exactly remember but I think it involved dividing the 2 out of the cos2(x)

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