Math.cosh()

The Math.cosh() function returns the hyperbolic cosine of a number, that can be expressed using the constant e:

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

Try it

Syntax

Math.cosh(x)

Parameters

x

A number.

Return value

The hyperbolic cosine of the given number.

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()

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

Specifications

Specification
ECMAScript Language Specification
# sec-math.cosh

Browser compatibility

BCD tables only load in the browser

See also