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OpenStudy (raffle_snaffle):
How do we integrate (cos(x))^2?
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OpenStudy (raffle_snaffle):
I forgot how to integrate this... Help!
OpenStudy (anonymous):
use cos(2x)=2(cosx)^2-1 so (cosx)^2=[cos(2x)+1]/2
OpenStudy (raffle_snaffle):
is that a trig identity
OpenStudy (raffle_snaffle):
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