Trigonometry
Intermediate

Double Angle: Sine

Sine of twice an angle.

Formula

sin⁡2θ=2sin⁡θcos⁡θ\sin 2\theta = 2\sin\theta\cos\theta

Variables

\thetaAngle

Did You Know?

The double-angle formula sin 2θ = 2 sinθ cosθ is why a projectile's range is maximised at exactly 45°.

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