Math.sin()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The Math.sin()
static method returns the sine of a number in radians.
Try it
function getCircleY(radians, radius) {
return Math.sin(radians) * radius;
}
console.log(getCircleY(1, 10));
// Expected output: 8.414709848078965
console.log(getCircleY(2, 10));
// Expected output: 9.092974268256818
console.log(getCircleY(Math.PI, 10));
// Expected output: 1.2246467991473533e-15
Syntax
js
Math.sin(x)
Parameters
x
-
A number representing an angle in radians.
Return value
Description
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()
js
Math.sin(-Infinity); // NaN
Math.sin(-0); // -0
Math.sin(0); // 0
Math.sin(1); // 0.8414709848078965
Math.sin(Math.PI / 2); // 1
Math.sin(Infinity); // NaN
Specifications
Specification |
---|
ECMAScript® 2025 Language Specification # sec-math.sin |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | server | ||||||||||||
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sin |
Legend
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- Full support
- Full support
The compatibility table on 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.