SIN
描述
计算参数的正弦值
语法
SIN(<a>)
参数
参数 | 说明 |
---|---|
<a> | 浮点数,要计算参数的弧度值 |
返回值
参数 <a>
的正弦值,弧度制表示。
举例
select sin(1);
+------------------------+
| sin(cast(1 as DOUBLE)) |
+------------------------+
| 0.8414709848078965 |
+------------------------+
select sin(0);
+------------------------+
| sin(cast(0 as DOUBLE)) |
+------------------------+
| 0.0 |
+------------------------+
select sin(Pi());
+------------------------------------+
| sin(pi()) |
+------------------------------------+
| 0.00000000000000012246467991473532 |
+------------------------------------+