PHP开发教程

MySQL cot()函数

COT(X)

该函数返回X的余切,考虑以下例子:

mysql>SELECT COT(1);
+---------------------------------------------------------+
| COT(1)                                                  |
+---------------------------------------------------------+
| 0.64209261593433                                        |
+---------------------------------------------------------+
1 row in set (0.00 sec)


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