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Binomial Summations 5

Algebra Level 5

Find the value of \[\Large2\sum_{k=0}^n \left[\binom nk \sin(kx)\cos\left((n-k)x\right)\right]\]

Here, take \(n=13\) and \(x = 1.467^c\) radians.

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by Kishore S Shenoy

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