MySQL ATAN2() function
ATAN2() function
MySQL ATAN2() returns the arc tangent of two numbers for a point on a Cartesian plane.The reverse function is TAN().
Syntax:
ATAN2(num1, num2);
Arguments:
Name | Description |
---|---|
num1 | A number. |
num2 | A number. |
Syntax Diagram:

MySQL Version: 5.6
Example:
Code:
SELECT ATAN2(-3,2);
Explanation:
The above MySQL statement will return the arc tangent in radians of -3 and 2 for a point in a Cartesian plane.
Sample Output:
mysql> SELECT ATAN2(-3,2); +--------------------+ | ATAN2(-3,2) | +--------------------+ | -0.982793723247329 | +--------------------+ 1 row in set (0.01 sec)
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