radians

description

Syntax

DOUBLE radians(DOUBLE x) 返回x的弧度值, 从度转换为弧度.

example

1. mysql> select radians(0);
2. +--------------+
3. | radians(0.0) |
4. +--------------+
5. |            0 |
6. +--------------+
7. mysql> select radians(30);
8. +---------------------+
9. | radians(30.0)       |
10. +---------------------+
11. | 0.52359877559829882 |
12. +---------------------+
13. mysql> select radians(90);
14. +--------------------+
15. | radians(90.0)      |
16. +--------------------+
17. | 1.5707963267948966 |
18. +--------------------+

keywords

1. RADIANS