JavaScript tan() method

Definition and usage

tan() The method returns a number representing the tangent of the angle.

Instance

Example 1

Returns the tangent of a number (angle):

Math.tan(90);

Try it yourself

Example 2

Returns the tangent of different angles:

var a = Math.tan(90);
var b = Math.tan(-90);
var c = Math.tan(45);
var d = Math.tan(60);

Try it yourself

Syntax

Math.tan(x)

Parameter value

Parameter Description
x

Required. Number. Represents the angle (in radians).

Multiplying the angle by 0.017453293 (2PI/360) converts it to radians.

Technical Details

Return Value: A number representing the tangent of an angle
JavaScript Version: ECMAScript 1

Browser Support

Method Chrome IE Firefox Safari Opera
tan() Support Support Support Support Support

Related Pages

Tutorial:JavaScript Mathematics