Web/JavaScript/Reference/Global objects/Math/sin

The Math.sin() function returns the sine of a number.

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Syntax

Math.sin(x)

Parameters

x

A number (given in radians).

Return value

The sine of the given number.

Description

The Math.sin() method returns a numeric value between -1 and 1, which represents the sine of the angle given in radians.

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

Examples

Using Math.sin()

Math.sin(0);           // 0
Math.sin(1);           // 0.8414709848078965

Math.sin(Math.PI / 2); // 1

Specifications

Specification
ECMAScript (ECMA-262)The definition of 'Math.sin' in that specification.

Browser compatibility

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile						Server
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet	Node.js
sin	Chrome Full support 1	Edge Full support 12	Firefox Full support 1	IE Full support 3	Opera Full support 3	Safari Full support 1	WebView Android Full support 1	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support 10.1	Safari iOS Full support 1	Samsung Internet Android Full support 1.0	nodejs Full support 0.1.100

Legend

Full support  

Full support

See also

• Math.acos()
• Math.asin()
• Math.atan()
• Math.atan2()
• Math.cos()
• Math.tan()

Math.sin() by Mozilla Contributors is licensed under CC-BY-SA 2.5.