Question

arcsin √2/2 + 3arccos √2/2 + 2arctg 1

Answer 1

$arcsinfrac{sqrt{2} }{2} +3arccosfrac{sqrt{2} }{2} +2arctg1=frac{pi}{4} +3*frac{pi}{4}+2*frac{pi}{4} =frac{3pi}{2}$