Question

plzz answer this question

Answer 1

Hey sis here is your answer!


Final Result:
$\frac{4 - \pi}{\pi + 4}$


Identities and hypothesis to know :

$1) {x}^{2} = (x \sec(x) )(x \cos(x) ) \\ easy \: \: but \: most \: imporant \: step.$
This above identity is first step .

2) Integration by parts ( second step)



3)
Integration of sec^2(x ) is tanx with appropriate
limits.
(This is last step which comes after solving trigonometric equations and integration.)


For Calculation Process :
See Picture

Hope, you understand my answer and it may helps you.



Apologize me if there are any errors arrived due to calculation or other stuffs.



3)