TAN()

函数说明

TAN() 函数返回输入参数（用弧度表示）的正切值。

函数语法

> TAN(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,-3.14159);
mysql> select tan(a),tan(b) from t1;
+--------------------+--------------------------+
| tan(a)             | tan(b)                   |
+--------------------+--------------------------+
|  1.557407724654902 | -0.000002535181590118894 |
| -1.557407724654902 |  0.000002535181590118894 |
+--------------------+--------------------------+
2 rows in set (0.01 sec)