Надо)) а) arccos(-1/2)+arcsin(-1/2) б) arccos(-√2/ (-1) в) arccos (-√3/2)+ arcsin (-√3/2) г) arccos √2/2- arcsin (-√3/2)

а) arccos(-1/2)+arcsin(-1/2)=2п/3 +(-п/6) = 4п/6  - п/6 = п/2ю

б) arccos(-√2/2)-(arcsin (-1) = 3п/4 -  (-п/2) =   3п/4 + п/2 = 5п/4.

в) arccos (-√3/2)+ arcsin (-√3/2) = 5п/6 + (- п/3) = 5п/6 - 2п/6 = п/2.

г) arccos √2/2- arcsin (-√3/2) = п/4 - ( - п/3)= п/4 + п/3 = 7п/12.