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10 cards from this deck
2sin(θ)cos(θ)2\sin(\theta)\cos(\theta)2sin(θ)cos(θ)
cos2(θ)−sin2(θ)\cos^2(\theta) - \sin^2(\theta)cos2(θ)−sin2(θ)
2cos2(θ)−12\cos^2(\theta) - 12cos2(θ)−1
1−2sin2(θ)1 - 2\sin^2(\theta)1−2sin2(θ)
Three
2tan(θ)1−tan2(θ)\frac{2\tan(\theta)}{1 - \tan^2(\theta)}1−tan2(θ)2tan(θ)
Trig functions of 2θ2\theta2θ in terms of θ\thetaθ
Simplify integrals/derivatives with trig functions
Wave mechanics, signal processing, oscillations
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