2arcsin(-1/2)+arccos1+arctg^3

Question

2arcsin(-1/2)+arccos1+arctg^3

Answer 1

2arcsin(-1/2)+arccos1+arctg^3=
2*(-П/6)+0+П/3=
-2П/6+0+П/3=
-П/3+0+П/3=0
Ответ:0