Arcsin 1/√2-arctg(-√3)

Question

Arcsin 1/√2-arctg(-√3)

Answer 1

arcsin1/√2=arcsin√2/2=π/4

arctg(-√3)=-arctg(√3)=-π/3

arcsin 1/√2-arctg(-√3) = π/4 -(-π/3) =π/4 + π/3 =  7π/12