90°
(π/2)
(π/3)
360°
0°
(2π)
30°
(π/6)
60°
330°
(11π/6)
300°
(5π/3)
270°
(3π/2)
240°
(4π/3)
210°
(7π/6)
180°
(π)
150°
(5π/6)
120°
(2π/3)