COS()

函数说明

COS() 函数返回输入参数（用弧度表示）的余弦值。

函数语法

> COS(number)

参数释义

示例

drop table if exists t1;
create table t1(a int,b float);
insert into t1 values(1,3.14159);
insert into t1 values(-1,1.57);
mysql> select cos(a),cos(b) from t1;
+--------------------+----------------------+
| cos(a)             | cos(b)               |
+--------------------+----------------------+
| 0.5403023058681398 |  -0.9999999999967865 |
| 0.5403023058681398 | 0.000796274258662553 |
+--------------------+----------------------+
2 rows in set (0.01 sec)