## Definition and Usage

The sin() method returns the sine of a number.

## Syntax

Parameter | Description |

x | Required. A number |

## Tips and Notes

**Note:** The sin() method returns a numeric value between -1 and 1, which represents the sine of the parameter x.

## Example

In the following example we will return the sine of different numbers:

<script type="text/javascript"> document.write(Math.sin(3) + "<br />");
document.write(Math.sin(-3) + "<br />");
document.write(Math.sin(0) + "<br />");
document.write(Math.sin(Math.PI) + "<br />");
document.write(Math.sin(Math.PI/2)); </script> |

The output of the code above will be:

0.1411200080598672
-0.1411200080598672
0
1.2246063538223772e-16
1 |