PHP开发教程

MySQL radians()函数

RADIANS(X)

这个函数返回X的弧度值,从度转换为弧度。

mysql>SELECT RADIANS(90);
+---------------------------------------------------------+
| RADIANS(90)                                             |
+---------------------------------------------------------+
|1.570796                                                 |
+---------------------------------------------------------+
1 row in set (0.00 sec)


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