2. Вычислите arccos (sqrt(3))/2 + 2arcctg(- (sqrt(3))/3) + arcsin(- (sqrt(2))/2) + arcctg * 1 =
arccos(sqrt(3))/2+2arcctg(-(sqrt(3))/3)+arcsin(-(sqrt(2))/2)+arcctg1= =(π/6)+2*((2π)/3)+((5π)/4)+(π/4)=(2π+16π+15π+3π)/12=3π