tan

description

Syntax

DOUBLE tan(DOUBLE x) 返回x的正切值，x为弧度值.

example

1. mysql> select tan(0);
2. +----------+
3. | tan(0.0) |
4. +----------+
5. |        0 |
6. +----------+
7. mysql> select tan(1);
8. +--------------------+
9. | tan(1.0)           |
10. +--------------------+
11. | 1.5574077246549023 |
12. +--------------------+

keywords

1. TAN