Помогите!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! arcsin1/2+arccos(-√3/2)+4arctg(-1)

Question

Помогите!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
arcsin1/2+arccos(-√3/2)+4arctg(-1)

Answer 1

arcsin1/2+arccos(-√3/2)+4arctg(-1)=п/6+(п-п/6)-4*п/4=п/6+5п/6-п=п-п=0