JavaScript Math.acosh()

let x = Math.acosh(1);

let x = Math.acosh(2);

Description

The Math.acosh() method returns the hyperbolic arc-cosine of a number.

If the parameter is less than 1, the method returns NaN.

Math.acosh( x)

Parameter	Description
x	Required. A number.

Type	Description
Number	The hyperbolic arc-cosine of the parameter. `NaN` if the parameter is less than 1 or not numeric.

Math.acosh() is an ECMAScript1 (ES1) feature.

ES1 (JavaScript 1997) is fully supported in all browsers:


Chrome	Edge	Firefox	Safari	Opera	IE
Yes	Yes	Yes	Yes	Yes	Yes