JavaScript Math atan2() Method
Javascript Math.atan2() method is used to return the arctangent of the quotient of its arguments. The Math.atan2() method returns a numeric value between -Î and Î 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 are examples of the Math atan2() Method.
Example 1: When the y-coordinate is greater than the x-coordinate:
Javascript
console.log(Math.atan2(90, 15)); |
1.4056476493802699
Example 2: When y-coordinate is smaller than x-coordinate
Input : Math.atan2(15, 90);
Output : 0.16514867741462683
Javascript
console.log(Math.atan2(15, 90)); |
0.16514867741462683
Example 3: When y-coordinate is the same as x-coordinate
Javascript
console.log(Math.atan2(90, 90)); |
0.7853981633974483
We have a complete list of Javascript Math Objects methods, to check those please go through this Javascript Math Object Complete reference article.
Supported Browsers:
- Google Chrome 1 and above
- Firefox 1 and above
- Opera 3 and above
- Safari 1 and above
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