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Java Script

atan2()


Description

The atan2() method returns the arctangent of the quotient of its arguments. The angle returned is a numeric value between PI and -PI and represents the counterclockwise angle in radians (not degrees) between the positive X axis and the point (x, y).

This method has the form:

Math.atan2(x,y)
Parameter Description
x (required) A number
y (required) A number

Examples

The following example shows the basic use of this method.

<script>
document.write(Math.atan2(8,4));
</script>

This produces the following result:

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