解题方法
1 . 已知
,则
等于( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe22489fc040b51a46f15b27ce79c69d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbeb6ffa9de667926d21b55b8e5923c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2 . 设锐角
满足
,则数据
的极差是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95f916e9a29372c9e912a78fbf64003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2117340513deb90d827c0ea2370bc86.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次