COT()

函数说明

COT() 函数返回输入参数（用弧度表示）的余切值。

函数语法

1. > COT(number)

参数释义

示例

1. mysql> SELECT COT(12);
2. +---------------------+
3. | cot(12)             |
4. +---------------------+
5. | -1.5726734063976895 |
6. +---------------------+
7. 1 row in set (0.00 sec)

1. drop table if exists t1;
2. create table t1(a int,b float);
3. insert into t1 values(1,3.14159);
4. insert into t1 values(-1,12);

6. mysql> select cot(a), cot(b) from t1;
7. +---------------------+---------------------+
8. | cot(a)              | cot(b)              |
9. +---------------------+---------------------+
10. |  0.6420926159343306 |  -394449.0619219334 |
11. | -0.6420926159343308 | -1.5726734063976895 |
12. +---------------------+---------------------+
13. 2 rows in set (0.01 sec)