# **SIN()**

## **函数说明**

SIN() 函数返回输入参数（用弧度表示）的正弦值。

## **函数语法**

```text
> SIN(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**

```text
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 sin(a),sin(b) from t1;
+---------------------+--------------------------+
| sin(a)              | sin(b)                   |
+---------------------+--------------------------+
|  0.8414709848078965 | 0.0000025351815901107472 |
| -0.8414709848078965 |       0.9999996829736023 |
+---------------------+--------------------------+
2 rows in set (0.01 sec)
```