Question Number 31075 by abdo imad last updated on 02/Mar/18
$${find}\:\:\int_{\mathrm{0}} ^{\pi} \:\:\:\:\:\frac{{sin}\theta}{{cos}^{\mathrm{2}} \theta\:+\mathrm{2}\:{sin}^{\mathrm{2}} \theta}\:{d}\theta\:. \\ $$
find-0-pi-sin-cos-2-2-sin-2-d-