Trigonometry
Intermediate

Secant

Reciprocal of cosine.

Formula

sec⁡θ=1cos⁡θ\sec\theta = \frac{1}{\cos\theta}

Variables

\thetaAngle

Example

sec 60° = 2

Did You Know?

Secant comes from the Latin for "cutting", because the line it measures cuts across the circle.

secantreciprocal