Question Number 39016 by maxmathsup by imad last updated on 01/Jul/18
$${calculate}\:\int_{\mathrm{0}} ^{\pi} \:\:\:\:\frac{{sin}\left({nx}\right)}{{cosx}}{dx}\:\:{with}\:{n}\:{from}\:{N}\:. \\ $$
calculate-0-pi-sin-nx-cosx-dx-with-n-from-N-