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sin 0 (or 180)
0 (sin)
sin 30
½ (sin)
sin 45
21/2/2 (sin)
sin 60
31/2/2 (sin)
sin 90
1 (sin)
cos 0
1 (cos)
cos 30
31/2/2 (cos)
cos 45
21/2/2 (cos)
cos 60
½ (cos)
cos 90
0 (cos)
cos 180
-1 (cos)
tan 0 (or 180)
0 (tan)
tan 30
31/2/3 (tan)
tan 45
1 (tan)
tan 60
31/2 (tan)
tan 90
undefined