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10 cards from this deck
(cosθ,sinθ)(\cos \theta, \sin \theta)(cosθ,sinθ)
2π2\pi2π
π\piπ
111
[−1,1][-1, 1][−1,1] or −1≤y≤1-1 \leq y \leq 1−1≤y≤1
All real numbers or (−∞,∞)(−\infty, \infty)(−∞,∞)
tanθ=sinθcosθ\tan \theta = \frac{\sin \theta}{\cos \theta}tanθ=cosθsinθ
Odd function: sin(−x)=−sinx\sin(-x) = -\sin xsin(−x)=−sinx
Even function: cos(−x)=cosx\cos(-x) = \cos xcos(−x)=cosx
At θ=π2+kπ\theta = \frac{\pi}{2} + k\piθ=2π+kπ, where kkk is an integer
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