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10 cards from this deck
Triangle with one 90° angle
Longest side, opposite the right angle
Side opposite to angle θ\thetaθ
Side next to θ\thetaθ, not the hypotenuse
sinθ=oh\sin \theta = \frac{o}{h}sinθ=ho (opposite/hypotenuse)
cosθ=ah\cos \theta = \frac{a}{h}cosθ=ha (adjacent/hypotenuse)
tanθ=oa\tan \theta = \frac{o}{a}tanθ=ao (opposite/adjacent)
Sin-Opp/Hyp, Cos-Adj/Hyp, Tan-Opp/Adj
1°=60′1° = 60'1°=60′
When finding an unknown angle
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