JavaScript Math.atan2() Method
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JavaScript Math.atan2() Method
The Math.atan2()
method returns the angle in the plane between the positive x-axis and the ray from (0, 0) to the point (x, y), for Math.atan2(y, x).
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<script>
var result = Math.atan2(4, 2);
document.write(result);
</script>
</body>
</html>
Syntax
Math.atan2(y, x)
Parameter Values
Value | Type | Explanation |
---|---|---|
y | Required | The y coordinate of the point. |
x | Required | The x coordinate of the point. |
Return Value
Value | Explanation |
---|---|
Number | The arc-tangent of the quotient of its arguments. The return value will be between -π and π. The return value is represented in radians. |
NaN | If the given value is empty. |
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