JavaScript Math.acosh()
Syntax & Examples

Math.acosh() static-method

The Math.acosh() method in JavaScript returns the hyperbolic arccosine of a number. The method returns a value in the range [0, ∞) for x ≥ 1.

Syntax of Math.acosh()

The syntax of Math.acosh() static-method is:

Math.acosh(x)

This acosh() static-method of Math returns the hyperbolic arccosine of x.

Parameters

ParameterOptional/RequiredDescription
xrequiredA number greater than or equal to 1. If the value of x is less than 1, the method returns NaN.

Return Type

Math.acosh() returns value of type Number.


✐ Examples

1 Using Math.acosh() with a number greater than 1

In JavaScript, we can use the Math.acosh() method to get the hyperbolic arccosine of a number greater than 1.

For example,

  1. We call the Math.acosh() method with a number x greater than 1.
  2. The hyperbolic arccosine value is returned and stored in the variable result.
  3. We log result to the console using console.log() method.

JavaScript Program

const x = 2;
const result = Math.acosh(x);
console.log(result);

Output

1.3169578969248166

2 Using Math.acosh() with 1

In JavaScript, we can use the Math.acosh() method to get the hyperbolic arccosine of 1.

For example,

  1. We call the Math.acosh() method with 1 x.
  2. The hyperbolic arccosine value is returned and stored in the variable result.
  3. We log result to the console using console.log() method.

JavaScript Program

const x = 1;
const result = Math.acosh(x);
console.log(result);

Output

0

3 Using Math.acosh() with a number less than 1

In JavaScript, we can use the Math.acosh() method to try to get the hyperbolic arccosine of a number less than 1, which returns NaN.

For example,

  1. We call the Math.acosh() method with a number x less than 1.
  2. The method returns NaN and the result is stored in the variable result.
  3. We log result to the console using console.log() method.

JavaScript Program

const x = 0.5;
const result = Math.acosh(x);
console.log(result);

Output

NaN

Summary

In this JavaScript tutorial, we learned about acosh() static-method of Math: the syntax and few working examples with output and detailed explanation for each example.