Math.cosh()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The Math.cosh() static method returns the hyperbolic cosine of a number. That is,

𝙼𝚊𝚝𝚑.𝚌𝚘𝚜𝚑(𝚡)=cosh(x)=ex+e−x2\mathtt{\operatorname{Math.cosh}(x)} = \cosh(x) = \frac{\mathrm{e}^x + \mathrm{e}^{-x}}{2}

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Syntax

js
Math.cosh(x)

Parameters

x

A number.

Return value

The hyperbolic cosine of x.

Description

Because cosh() is a static method of Math, you always use it as Math.cosh(), rather than as a method of a Math object you created (Math is not a constructor).

Examples

Using Math.cosh()

js
Math.cosh(-Infinity); // Infinity
Math.cosh(-1); // 1.5430806348152437
Math.cosh(-0); // 1
Math.cosh(0); // 1
Math.cosh(1); // 1.5430806348152437
Math.cosh(Infinity); // Infinity

Specifications

Specification
ECMAScript Language Specification
# sec-math.cosh

Browser compatibility

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See also