-4arcsin(-(V2/2))+8arccos(-(V2/2))-15arcctg(V3/3)

Question

-4arcsin(-(V2/2))+8arccos(-(V2/2))-15arcctg(V3/3)

Answer 1

Arcsin(-√2/2)=-Π/4
arccos(-√2/2)=3Π/4
arcctg(√3/3)=Π/3
Подставляем
-4*(-Π/4)+8*3Π/4-15*Π/3=2Π