Math.sin

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

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	Status	Comment
ECMAScript 1st Edition (ECMA-262)	Standard	Initial definition. Implemented in JavaScript 1.0.
ECMAScript 5.1 (ECMA-262) The definition of 'Math.sin' in that specification.	Standard
ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Math.sin' in that specification.	Standard
ECMAScript 2017 Draft (ECMA-262) The definition of 'Math.sin' in that specification.	Draft

Browser compatibility

See also

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