Math.tan()
The Math.tan()
function returns the tangent of a number.
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
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