Question

1. Вычислить:

А) 1/5arccos(-1/2)+1/3arccos0;
Б) 0,7arcsin0+arcsin(-1/2);
В) 0,5arctg0+2arctg(-√3/3)

Answer 1

A) 1/5*2π/3+1/3*π/2=2π/15+π/6=9π/30=3π/10
Б) 0,7*0-π/6=-π/6
В)0,5*0-2*π/6=-π/3