Question

Arcsin(-1/2)+arctg(-1/V3-arcctgV3

Answer 1

$arcsinleft(- frac{1}{2} right)+arctanleft(- frac{1}{sqrt{3}} right)-arcctgsqrt{3} =-frac{pi}{6} -frac{pi}{6} -frac{pi}{6} =-frac{pi}{2}$