Question Number 92088 by mathmax by abdo last updated on 04/May/20
$${calculate}\:\int_{\mathrm{0}} ^{\frac{\pi}{\mathrm{4}}} {ln}\left({cosx}\right)\:\:{and}\:\int_{\mathrm{0}} ^{\frac{\pi}{\mathrm{4}}} \:{ln}\left({sinx}\right){dx} \\ $$
calculate-0-pi-4-ln-cosx-and-0-pi-4-ln-sinx-dx-