The Math.atan2() function in JavaScript 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 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 function accepts two parameters value1 and value2. value1 represents the y-coordintae and value2 represents x-coordinate of the point (x,y).
Return Value: It returns the arctangent of the quotient of its arguments.
Examples:
Input : Math.atan2(90, 15); Output : 1.4056476493802699 Input : Math.atan2(15, 90); Output : 0.16514867741462683
Below programs illustrate the Math.atan2() function in JavaScript:
- When y-coordinate is greater than x-coordinate:
<
script
type
=
"text/javascript"
>
document.write(Math.atan2(90, 15));
</
script
>
Output:
1.4056476493802699
- When y-coordinate is smaller than x-coordinate
<
script
type
=
"text/javascript"
>
document.write(Math.atan2(15, 90));
</
script
>
Output:
0.16514867741462683
This article is attributed to GeeksforGeeks.org
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- When y-coordinate is smaller than x-coordinate
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