The value of cot(∑cot^-1(1 + ∑2k) for n ∈ [n=1, 23] for k ∈ [k=1, n] - Sarthaks eConnect | Largest Online Education Community
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![f(n) = cot^2 (pi/n) + cot^2 (2 pi)/n +...............+ cot^2 ((n-1) pi)/n, ( n gt1, n in N)` ... - YouTube f(n) = cot^2 (pi/n) + cot^2 (2 pi)/n +...............+ cot^2 ((n-1) pi)/n, ( n gt1, n in N)` ... - YouTube](https://i.ytimg.com/vi/v_sbrl_0hp8/maxresdefault.jpg)
f(n) = cot^2 (pi/n) + cot^2 (2 pi)/n +...............+ cot^2 ((n-1) pi)/n, ( n gt1, n in N)` ... - YouTube
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