Question Number 60683 by maxmathsup by imad last updated on 24/May/19
$${find}\:{A}_{{n}} =\int_{\mathrm{0}} ^{\frac{\pi}{\mathrm{4}}} \:{sin}^{{n}} {xdx}\:\:\:\:{with}\:{n}\:{integr}\:{natural}\:. \\ $$
find-A-n-0-pi-4-sin-n-xdx-with-n-integr-natural-