tan
description
Syntax
DOUBLE tan(DOUBLE x)
返回x的正切值，x为弧度值.
example
mysql> select tan(0);
+----------+
| tan(0.0) |
+----------+
| 0 |
+----------+
mysql> select tan(1);
+--------------------+
| tan(1.0) |
+--------------------+
| 1.5574077246549023 |
+--------------------+keywords
TAN