Топ-100
 
RDBMS Type: MySQL
Topic

Syntax:
ATAN(X)

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

URL: https://dev.mysql.com/doc/refman/8.0/en/mathematical-functions.html

Example

mysql> SELECT ATAN(2);
-> 1.1071487177941
mysql> SELECT ATAN(-2);
-> -1.1071487177941