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

参数说明
number必要参数，可取任意数值数据类型

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)