ATAN

Syntax

ATAN(X)

Description

Returns the arctangent of X, that is, the value whose tangent is X.

Example

SELECT ATAN(-10), ATAN(0), ATAN(10), ATAN(-0.5), ATAN(0.5);
+---------------------+---------+--------------------+---------------------+--------------------+
| ATAN(-10)           | ATAN(0) | ATAN(10)           | ATAN(-0.5)          | ATAN(0.5)          |
+---------------------+---------+--------------------+---------------------+--------------------+
| -1.4711276743037347 |       0 | 1.4711276743037347 | -0.4636476090008061 | 0.4636476090008061 |
+---------------------+---------+--------------------+---------------------+--------------------+
1 row in set (0.001 sec)