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.
by
Kishore S Shenoy