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Help <Vectors>

I am stuck at this problem, need some help!

Q. Using condition of Vector Equilibrium, prove that \(\sum_{k=0}^{2n-1} \cos \frac{k\pi}{n} = 0\) , where n is an integer.

Note by Vatsalya Tandon
2 years, 3 months ago

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Hint:- Sum of horizontal components of vectors = Horizontal component of resultant vector. Siddhartha Srivastava · 2 years, 3 months ago

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