Exact Values of Trig Functions
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cos π
-1
sin 3π/2
-1
cos 3π/2
0
cos π/2
0
sin 0
0
sin π
0
tan 0
0
tan π
0
cos 0
1
sin π/2
1
tan π/4
1
cos π/3
1/2
sin π/6
1/2
tan 3π/2
undef
tan π/2
undef
cos π/4
√2/2
sin π/4
√2/2
tan π/3
√3
cos π/6
√3/2
sin π/3
√3/2
tan π/6
√3/3
