# JavaScript Math atan2( ) Method

• Last Updated : 27 Jan, 2022

Below is the example of the Math atan2() Method.

• Example: When y-coordinate is greater than x-coordinate:

## Javascript

 ``

Output:

`1.4056476493802699`

The Math.atan2() method is used to return the arctangent of the quotient of its arguments. The Math.atan2() method returns a numeric value between -Π and Π representing the angle theta of an (x, y) point and the positive x-axis. This is the counterclockwise angle, measured in radians, between the positive X-axis, and the point (x, y).

Syntax:

`Math.atan2(value1, value2)`

Parameters: This method accepts two parameters as mentioned above and described below:

• value1: This parameter represents the y-coordinate.
• value2: represents x-coordinate of the point (x,y).

Returns: It returns the arctangent of the quotient of its arguments.

Below examples illustrate the Math.atan2() method in JavaScript:

• Example 1:
```Input : Math.atan2(90, 15);
Output : 1.4056476493802699```
• Example 2:
```Input : Math.atan2(15, 90);
Output : 0.16514867741462683```

More codes for the above method are as follows:

Program 1: When y-coordinate is smaller than x-coordinate

## Javascript

 ``

Output:

`0.16514867741462683`

Program 2: When y-coordinate is same as x-coordinate

## Javascript

 ``

Output:

`0.7853981633974483`

Supported Browsers:

• Google Chrome 1 and above
• Internet Explorer 4 and above
• Firefox 1 and above
• Opera 3 and above
• Safari 1 and above

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