2 arcsin(-√3/2) + arctg(-1)+ arccos √2/2

Question

2 arcsin(-√3/2) + arctg(-1)+ arccos √2/2

Answer 1

2 arcsin(-√3/2) + arctg(-1)+ arccos √2/2=-2arcsin(√3/2) - arctg1+ arccos √2/2=-2*П/3-П/4+П/4=-2П/3