Question Number 58720 by Forkum Michael Choungong last updated on 28/Apr/19
$${find}\:\frac{{dy}}{{dx}}\:{given}\:{that}\:\:{y}\:=\:{cos}\left({x}°\right) \\ $$
Answered by tanmay last updated on 28/Apr/19
$$\mathrm{180}^{{o}} =\pi\:{radian} \\ $$$${x}^{{o}} =\frac{\pi{x}}{\mathrm{180}}\:{radian} \\ $$$${y}={cos}\left(\frac{\pi{x}}{\mathrm{180}}\right) \\ $$$$\frac{{dy}}{{dx}}=−{sin}\left(\frac{\pi{x}}{\mathrm{180}}\right)×\frac{\pi}{\mathrm{180}} \\ $$
Answered by malwaan last updated on 29/Apr/19
$${y}={cos}\left({x}\right) \\ $$$$\frac{{dy}}{{dx}}=−{sin}\left({x}\right) \\ $$