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10 cards from this deck
sinAcosB±cosAsinB\sin A \cos B \pm \cos A \sin BsinAcosB±cosAsinB
cosAcosB∓sinAsinB\cos A \cos B \mp \sin A \sin BcosAcosB∓sinAsinB
tanA±tanB1∓tanAtanB\frac{\tan A \pm \tan B}{1 \mp \tan A \tan B}1∓tanAtanBtanA±tanB
2sinθcosθ2\sin \theta \cos \theta2sinθcosθ
cos2θ−sin2θ\cos^2 \theta - \sin^2 \thetacos2θ−sin2θ
2tanθ1−tan2θ\frac{2\tan \theta}{1 - \tan^2 \theta}1−tan2θ2tanθ
The quadrant in which the half angle lies
Products of sine and cosine into sums
Sums/differences of sines and cosines into products
Sine, cosecant, tangent, cotangent
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