Arcsin(-1/√2)-arcsin1+arcsin√3/2
arcsin(-1/√2)-arcsin1+arcsin(√3/2)= -arcsin(1/√2)-π/2+π/3= -π/4-π/2+π/3=
=(-3π-6π+4π)/12= -5π/12
-π/4-π/2+π/3
(-3π-6π+4π)/12
-5π/12