Unit Circle
(0, 1) 90o = π 2 ( −1 2 , 3 2 ) 120o = 2π 3 ( 1 2 , 3 2 ) 60o = π 3 ( − 2 2 , 2 2 ) 135o = 3π 4 ( 2 2 , 2 2 ) 45o = π 4 ( − 3 2 , 1 2 ) ( 3 2 , 1 2 ) 30o = π 6 150o = 5π 6 (-1, 0) (1, 0) 0o = 0 360o = 2π 180o = π ( 3 2 , −1 2 ) ( − 3 2 , −1 2 ) 210o = 5π 6 330o = 11π 6 ( 2 2 , − 2 2 ) 315o = 7π 4 ( − 2 2 , − 2 2 ) 225o = 5π 4 ( 1 2 , − 3 2 ) 300o = 5π 3 ( −1 2 , − 3 2 ) 240o = 4π 3 (0, -1) 270o = 3π 2
(0, 1) 90o = π 2 In the unit circle, the radius is one ( −1 2 , 3 2 ) 120o = 2π 3 ( 1 2 , 3 2 ) 60o = π 3 ( − 2 2 , 2 2 ) 135o = 3π 4 ( 2 2 , 2 2 ) 45o = π 4 ( − 3 2 , 1 2 ) ( 3 2 , 1 2 ) 30o = π 6 150o = 5π 6 1 2 2 45o = π 4 (-1, 0) (1, 0) 180o = π 2 2 0o = 0 360o = 2π ( 3 2 , −1 2 ) ( − 3 2 , −1 2 ) 210o = 5π 6 330o = 11π 6 ( 2 2 , − 2 2 ) 315o = 7π 4 ( − 2 2 , − 2 2 ) 225o = 5π 4 ( 1 2 , − 3 2 ) 300o = 5π 3 ( −1 2 , − 3 2 ) 240o = 4π 3 (0, -1) 270o = 3π 2
(0, 1) 90o = π 2 ( −1 2 , 3 2 ) 120o = 2π 3 ( 1 2 , 3 2 ) 60o = π 3 ( − 2 2 , 2 2 ) 135o = 3π 4 ( 2 2 , 2 2 ) 45o = π 4 ( − 3 2 , 1 2 ) ( 3 2 , 1 2 ) 30o = π 6 150o = 5π 6 (-1, 0) (1, 0) 0o = 0 360o = 2π 180o = π ( 3 2 , −1 2 ) ( − 3 2 , −1 2 ) 210o = 5π 6 330o = 11π 6 ( 2 2 , − 2 2 ) 315o = 7π 4 ( − 2 2 , − 2 2 ) 225o = 5π 4 ( 1 2 , − 3 2 ) 300o = 5π 3 ( −1 2 , − 3 2 ) 240o = 4π 3 (0, -1) 270o = 3π 2