Question Number 125986 by Ñï= last updated on 16/Dec/20
Answered by Dwaipayan Shikari last updated on 16/Dec/20
$$−\mathrm{2}{tan}^{−\mathrm{1}} \left(\frac{{cos}\left(\frac{{t}}{\mathrm{2}}−\frac{{sint}}{\mathrm{2}}\right)}{{sin}\left(\frac{{t}}{\mathrm{2}}+\frac{{sint}}{\mathrm{2}}\right)}\right)+{C} \\ $$
Commented by Dwaipayan Shikari last updated on 16/Dec/20
https://brilliant.org/problems/integration-grandmaster-p1