# Math.atan method

The `Math.atan` method returns the arctangent of a number. The method parameter must be between `-Pi/2` and `Pi/2`, otherwise `NaN` will be returned.

## Syntax

`Math.atan(number);`

## Example

Let's output the arctangent of the number `2`:

`console.log(Math.atan(2));`

The code execution result:

`1.1071487177940904`

## See also

- the `Math.cos` method
  that returns the cosine of a number
- the `Math.sin` method
  that returns the sine of a number
- the `Math.tan` method
  that returns the tangent of a number
- the `Math.asin` method
  that returns the arcsine of a number
- the `Math.acos` method
  that returns the arccosine of a number

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