JavaScript Math.atan()
Description
The Math.atan() method returns the arctangent of a number as a value between -PI/2 and PI/2 radians.
JavaScript Tangent Methods:
The Math.tan() MethodThe Math.tanh() Method
The Math.atan() Method
The Math.atan2() Method
The Math.atanh() Method
Sine and Cosine Methods:
The Math.sin() MethodThe Math.cos() Method
Syntax
Math.atan(x)
Parameters
| Parameter | Description |
| x | Required. A number. |
Return Value
| Type | Description |
| Number | -PI to PI/2.NaN if the number is empty or not numeric. |
Browser Support
Math.atan() is an ECMAScript1 (ES1) feature.
ES1 (JavaScript 1997) is fully supported in all browsers:
| Chrome | Edge | Firefox | Safari | Opera | IE |
| Yes | Yes | Yes | Yes | Yes | Yes |
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