30°

(sqrt(3)/2, 1/2)

45°

(sqrt(2)/2, sqrt(2/2))

60°

(1/2, sqrt(3)/2)

pi/6 rad

(sqrt(3)/2, 1/2) 30°

pi/4 rad

(sqrt(2)/2, sqrt(2/2)) 45°

pi/3 rad

(1/2, sqrt(3)/2) 60°