Question Number 157935 by VIDDD last updated on 30/Oct/21
$$\:\mathrm{Evaluate}\:\boldsymbol{\mathrm{A}}=\underset{\mathrm{k}=\mathrm{1}} {\overset{\mathrm{n}} {\sum}}\left(\mathrm{tan}\frac{\mathrm{k}\pi}{\mathrm{2n}}\right) \\ $$
Evaluate-A-k-1-n-tan-kpi-2n-