The Math.tan()
function returns the tangent of a number.
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Syntax
Math.tan(x)
Parameters
x
- A number representing an angle in radians.
Return value
The tangent of the given number.
Description
The Math.tan()
method returns a numeric value that represents the tangent of the angle.
Because tan()
is a static method of Math
, you always use it as Math.tan()
, rather than as a method of a Math
object you created (Math
is not a constructor).
Examples
Using Math.tan()
Math.tan(1); // 1.5574077246549023
Because the Math.tan()
function accepts radians, but it is often easier to work with degrees, the following function accepts a value in degrees, converts it to radians and returns the tangent.
function getTanDeg(deg) { var rad = deg * Math.PI/180; return Math.tan(rad); }
Specifications
Specification |
---|
ECMAScript (ECMA-262) The definition of 'Math.tan' 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.
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
tan | 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