(mathematics) An iterative numerical method for finding a root of an equation f(x)=0, using a succession of roots of secant lines to better approximate the root.

Line intersecting curve at points.

Inverse of hyperbolic cosine function.

Reciprocal of the cosine function.

Inverse of the secant function.

In calculus, the integral of the secant function can be evaluated using a variety of methods and there are multiple ways of expressing the antiderivative, all of which can be shown to be equivalent via trigonometric identities,

In probability theory and statistics, the hyperbolic secant distribution is a continuous probability distribution whose probability density function and characteristic function are proportional to the hyperbolic secant function.