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sin(30)
1/2
sin(45)
√2/2
sin(60)
√3/2
cos(30)
√3/2
cos(45)
√2/2
cos(60)
1/2
tan(30)
1/√3
tan(45)
1
tan(60)
√3
sin(90-θ)
cos(θ)
cos(90-θ)
sin(θ)
tan(90-θ)
cot(θ) or 1/tan(θ)
sin(-θ)
-sin(θ)
cos(-θ)
cos(θ)
tan(-θ)
-tan(θ)
sin2θ + cos2θ
1
1 + tan2θ
sec2θ
1 + cot2θ
cosec2θ
sin(A ± B)
sin A cos B ± cos A sin B
cos(A ± B)
cos A cos B ∓ sin A sin B
tan(A ± B)
(tan A ± tan B)/(1 ∓ tan A tan B)
sin 2A
2 sin A cos A
tan 2A
(2 tan A)/(1 - tan2A)
cos 2A
cos2A - sin2A
2cos2A - 1
1 - 2sin2A