Unit Circle Sin Cosine Tangent Radians
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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
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
tan(3π/2)
∞ (undefined)
tan(π/2)
∞ (undefined)
