unit circle pt. 5
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tan 7pi/4; 315 degrees
-1
sin 11pi/6; 330 degrees
-1/2
sin 7pi/4; 315 degrees
-sqrt 2/2
tan 5pi/3; 300 degrees
-sqrt 3
sin 5pi/3; 300 degrees
-sqrt 3/2
tan 11pi/6; 330 degrees
-sqrt 3/3
sin 2pi; 360 degrees
0
tan 2pi; 360 degrees
0
cos 2pi; 360 degrees
1
cos 5pi/3; 300 degrees
1/2
cos 7pi/4; 315 degrees
sqrt 2/2
cos 11pi/6; 330 degrees
sqrt 3/2
