Math.cosh()

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

{{InteractiveExample("JavaScript Demo: Math.cosh()")}}

```js interactive-example console.log(Math.cosh(0)); // Expected output: 1

console.log(Math.cosh(1)); // Expected output: 1.543080634815244 (approximately)

console.log(Math.cosh(-1)); // Expected output: 1.543080634815244 (approximately)

console.log(Math.cosh(2)); // Expected output: 3.7621956910836314

## Syntax

```js-nolint
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()#

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#

{{Specifications}}

Browser compatibility#

{{Compat}}

See also#

• Polyfill of Math.cosh in core-js
• es-shims polyfill of Math.cosh
• {{jsxref("Math.acosh()")}}
• {{jsxref("Math.asinh()")}}
• {{jsxref("Math.atanh()")}}
• {{jsxref("Math.sinh()")}}
• {{jsxref("Math.tanh()")}}