Question

please answer me please answer me​

Answer 1

Answer:

$\huge\mathtt\red{-1/2}$

Step-by-step explanation:

derivative of arctan((cos x)/(1 + sin x)) for x; = d dx [tan^ -1 ( cos^ 2 x 2 -sin^ 2 x 2 cos^ 2 x 2 +sin^ 2 x 2 +2 sin x 2 cos x 2 ]]; = d dx \ tan^ - [ 1-tan( x 2 ) 1+tan( x 2 ) ]][= d dx [tan^ -1 tan( x 4 - x 2 )]= - 1/2

$\huge\mathtt\red {BY YOUR DIDI }$