MySQL Tutorial/Math Numeric Functions/TAN

TAN(X) returns the tangent of X, where X is given in radians.

mysql>
mysql> SELECT TAN(PI());
+-----------------------+
| TAN(PI())             |
+-----------------------+
| -1.2246063538224e-016 |
+-----------------------+
1 row in set (0.00 sec)
mysql>
mysql> SELECT TAN(PI()+1);
+-----------------+
| TAN(PI()+1)     |
+-----------------+
| 1.5574077246549 |
+-----------------+
1 row in set (0.00 sec)