 # JavaScript Math asinh()

In this tutorial, you will learn about the JavaScript Math.asinh() method with the help of examples.

The `asinh()` method computes the hyperbolic arcsine of the specified number and returns it.

### Example

``````// hyperbolic arcsine of 5
let number = Math.asinh(5);
console.log(number);

// Output: 2.3124383412727525``````

## asinh() syntax

The syntax of the `Math.asinh()` method is:

``Math.asinh(number)``

Here, `asinh()` is a static method. Hence, we are accessing the method using the class name, `Math`.

## asinh() Parameter

The `asinh()` method takes a single parameter:

• `number` - whose hyperbolic arcsine is to be calculated

## asinh() Return Value

The `asinh()` method returns:

• hyperbolic arcsine of the given argument `number`
• NaN (Not a Number) for a non-numeric argument

## Example 1: JavaScript Math.asinh()

``````// hyperbolic arcsine of a negative number
let number2 = Math.asinh(-5);
console.log(number2);

// hyperbolic arcsine of zero
let number1 = Math.asinh(0);
console.log(number1);

// hyperbolic arcsine of a positive number
let number3 = Math.asinh(32);
console.log(number3);

// Output:
// -2.3124383412727525
// 0
// 4.15912713462618``````

In the above example, the `Math.asinh()` computes the hyperbolic arcsine of

• `-5` (negative number) - results in -2.3124383412727525
• `0` (zero) - results in 0
• `32` (positive number) - results in 4.15912713462618

## Example 2: Math.asinh() with Infinity

``````// asinh() with positive infinity
let number1 = Math.asinh(Infinity);
console.log(number1);
// Output: Infinity

// asinh() with negative infinity
let number2 = Math.asinh(-Infinity);
console.log(number2);
// Output: -Infinity``````

## Example 3: Math.asinh() with Non-Numeric argument

``````let string ="Harry";

// asinh() with a string argument
let value = Math.asinh(string);
console.log(value);

// Output: NaN``````

In the above example, we have tried to calculate the hyperbolic arcsine value of the string `"Harry"`. That's why we get NaN as the output.