Integration

Q53 ans 0.2
My doubt is after integration
Inside sin^1
In denominator should it be 2cosalpha
Or mod of 2cosalpha
Reply when you are sure
Thanks

@NishantThakre
Mod.

@ashishdeosingh
Then answer would not match


@VEDANTZOPE
But as @ashishdeosingh said
There should be mod of 2cosalpha in the denominator that is 2cosalpha

@VEDANTZOPE @ashishdeosingh please reply

@NishantThakre I solved using substituiting x=2(cosalpha)sint, and opened all the mods using the range of alpha , you will get the answer as 0.2 ,you can solve for yourself