The Math.tan()
function returns the tangent of a number.
Math.tan()
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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 Language Specification # sec-math.tan |
Browser compatibility
Desktop | Mobile | Server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
tan |
1
|
12
|
1
|
3
|
3
|
1
|
1
|
18
|
4
|
10.1
|
1
|
1.0
|
1.0
|
0.10.0
|
See also
© 2005–2022 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/tan