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10 cards from this deck
sinθ=OppositeHypotenuse\sin \theta = \frac{\text{Opposite}}{\text{Hypotenuse}}sinθ=HypotenuseOpposite
cosθ=AdjacentHypotenuse\cos \theta = \frac{\text{Adjacent}}{\text{Hypotenuse}}cosθ=HypotenuseAdjacent
tanθ=OppositeAdjacent\tan \theta = \frac{\text{Opposite}}{\text{Adjacent}}tanθ=AdjacentOpposite
cscθ=1/sinθ=Hypotenuse/Opposite\csc \theta = 1 / \sin \theta = \text{Hypotenuse} / \text{Opposite}cscθ=1/sinθ=Hypotenuse/Opposite
secθ=1/cosθ=Hypotenuse/Adjacent\sec \theta = 1 / \cos \theta = \text{Hypotenuse} / \text{Adjacent}secθ=1/cosθ=Hypotenuse/Adjacent
cotθ=1/tanθ=Adjacent/Opposite\cot \theta = 1 / \tan \theta = \text{Adjacent} / \text{Opposite}cotθ=1/tanθ=Adjacent/Opposite
A circle with radius 111 centered at the origin.
sin2θ+cos2θ=1\sin^2 \theta + \cos^2 \theta = 1sin2θ+cos2θ=1
Radians = Degrees × π\piπ / 180
sin90°=1\sin 90° = 1sin90°=1, cos90°=0\cos 90° = 0cos90°=0
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