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Chiquesta

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Express sin^6theta in multiples of costheta and hence evaluate the integral of sin^6theta from 0 to pi/2.Thanks in advance! :)
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These questions are related to de moivre's theorem:z^n + 1/z^n = 2cosntheta z^n - 1/z^n = 2 isin ntheta 1. Express sin^5theta in
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