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Trigonometry
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OpenStudy (anonymous):
8cos^5
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OpenStudy (anonymous):
how do i get it so that there are no powers
OpenStudy (anonymous):
what are you trying to do?
OpenStudy (anonymous):
i mean...you can use trig identities: ignoring the 8, we have cos^5(x) = cos^2(x) cos^2(x) cos(x) because 2+2+1=5 and you can sub in the trig identity for cos^2 which is (1/2)(1+cos(2x)
OpenStudy (anonymous):
@Gwynnia You are right
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