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15 cards from this deck
Equations involving trig functions that are true for all values
≡\equiv≡ (equivalence symbol)
sin2θ+cos2θ=1\sin^2\theta + \cos^2\theta = 1sin2θ+cos2θ=1
sin2θ=1−cos2θ\sin^2\theta = 1 - \cos^2\thetasin2θ=1−cos2θ
cos2θ=1−sin2θ\cos^2\theta = 1 - \sin^2\thetacos2θ=1−sin2θ
tanθ=sinθcosθ\tan \theta = \frac{\sin \theta}{\cos \theta}tanθ=cosθsinθ
Express everything in terms of a single trig function
Work with one side at a time
12\frac{1}{2}21
32\frac{\sqrt{3}}{2}23
12\frac{1}{\sqrt{2}}21
111
∣sinx∣|\sin x|∣sinx∣ (not necessarily sinx\sin xsinx)
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