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sin30 or sin(π/6)
1/2
sin60 or sin(π/3)
√3/2
sin45 or sin(π/4)
√2/2
cos30 or cos(π/6)
√3/2
cos60 or cos(π/3)
1/2
cos45 or cos(π/4)
√2/2
tan30 or tan(π/6)
√3/3
tan60 or tan(π/3)
√3
tan45 or tan(π/4)
1
sec
reciprocal of cosine
csc
reciprocal of sine
cot
reciprocal of tangent