Php atan2
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PHP function atan2
This function returns the arc tangent of X and Y radians. It is similar to calculate the arc tangent of X/Y radians, the only different is that the signs of both numbers are used to determine the quadrant of the result.
Syntax atan2
- X is the first number
- Y is the second number
atan2(X,Y);
Example 1
<?php <?php echo atan2(2,2); echo "<br/>"; echo atan2(2,-2); ?>
Output
0.78539816339745 2.3561944901923
