Math.acosh() - JavaScript | MDN
Try it
console.log(Math.acosh(0.999999999999));
// Expected output: NaN
console.log(Math.acosh(1));
// Expected output: 0
console.log(Math.acosh(2));
// Expected output: 1.3169578969248166
console.log(Math.acosh(2.5));
// Expected output: 1.566799236972411
Syntax
Parameters
x-
A number greater than or equal to 1.
Return value
The inverse hyperbolic cosine of x. If x is less than 1, returns NaN.
Description
Because acosh() is a static method of Math, you always use it as Math.acosh(), rather than as a method of a Math object you created (Math is no constructor).
Examples
Using Math.acosh()
js
Math.acosh(0); // NaN
Math.acosh(1); // 0
Math.acosh(2); // 1.3169578969248166
Math.acosh(Infinity); // Infinity
Specifications
| Specification |
|---|
| ECMAScript® 2027 Language Specification # sec-math.acosh |