Math.sinh()

The Math.sinh() function returns the hyperbolic sine of a number, that can be expressed using the constant e:

Math.sinh(x) = e x - e - x 2 \mathtt{\operatorname{Math.sinh(x)}} = \frac{e^x - e^{-x}}{2}

Syntax

Math.sinh(x)

Parameters

x

A number.

Return value

The hyperbolic sine of the given number.

Description

Because sinh() is a static method of Math, you always use it as Math.sinh(), rather than as a method of a Math object you created (Math is not a constructor).

Polyfill

This can be emulated with the help of the Math.exp() function:

Math.sinh = Math.sinh || function(x) {
  return (Math.exp(x) - Math.exp(-x)) / 2;
}

or using only one call to the Math.exp() function:

Math.sinh = Math.sinh || function(x) {
  var y = Math.exp(x);
  return (y - 1 / y) / 2;
}

Examples

Using Math.sinh()

Math.sinh(0); // 0
Math.sinh(1); // 1.1752011936438014

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
sinh
38
12
25
No
25
8
38
38
25
25
8
3.0

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/sinh