radians
description
Syntax
DOUBLE radians(DOUBLE x)
返回x的弧度值, 从度转换为弧度.
example
mysql> select radians(0);
+--------------+
| radians(0.0) |
+--------------+
| 0 |
+--------------+
mysql> select radians(30);
+---------------------+
| radians(30.0) |
+---------------------+
| 0.52359877559829882 |
+---------------------+
mysql> select radians(90);
+--------------------+
| radians(90.0) |
+--------------------+
| 1.5707963267948966 |
+--------------------+keywords
RADIANS