Răspuns:
Explicație pas cu pas:
sin(30°)=1/2
sin (-30°)=-1/2
arcsin(-1/2)=-30°
cos(60°)=1/2
arccos(1/2)=60°
⇒ arcsin(-1/2)+arccos(1/2)=-30°+60°=30°=π/6
arcsin(-1/2)=-arcsin1/2=-π/6
arccos1/2=60°=π/3
π/3-π/6=π/6
Bafta!
