Trigonometry
Basic

Tangent Identity

Tangent equals sine divided by cosine.

Formula

tan⁡θ=sin⁡θcos⁡θ\tan\theta = \frac{\sin\theta}{\cos\theta}

Variables

\thetaAngle

Did You Know?

That tangent equals sine over cosine means the tangent is undefined wherever cosine hits zero, at 90° and 270°.

tangentidentity