JavaScript Math sinh()

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

The sinh() method computes the hyperbolic sine of the specified number and returns it.


// hyperbolic sine of 1
let number = Math.sinh(1);

// Output: 1.1752011936438014

sinh() Syntax

The syntax of the Math.sinh() method is:


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

sinh() Parameter

The sinh() method takes a single parameter:

  • number - whose hyperbolic sine is to be calculated

sinh() Return Value

The sinh() method returns:

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

Example1: JavaScript Math.sinh()

// hyperbolic sine of negative number let number1 = Math.sinh(-1);
// hyperbolic sine of zero let number2 = Math.sinh(0);
// hyperbolic sine of positive number let number3 = Math.sinh(2);
console.log(number3); // Output: // -1.1752011936438014 // 0 // 3.626860407847019

In the above example, the Math.sinh() method computes the hyperbolic sine of

  • -1 (negative number) - results in -1.1752011936438014
  • 0 (zero) - results in 0
  • 2 (positive number) - results in 3.626860407847019

Note: Mathematically, the hyperbolic sine is equivalent to (ex - e-x)/2.

Example 2: Math.sinh() with Infinity Values

// sinh() with positive infinity let number1 = Math.sinh(Infinity);
console.log(number1); // Output: Infinity
// sinh() with negative infinity let number2 = Math.sinh(-Infinity);
console.log(number2); // Output: -Infinity

Example 3: Math.sinh() with Non-Numeric Argument

let string = "Harry";

// sinh() with a string argument let value = Math.sinh(string);
console.log(value); // Output: NaN

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

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