真题
1 . 已知
,且α与β的终边关于原点对称,则
的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a7bc61fc10d8c36312cb86346ba8ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
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真题
2 . 已知
,
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf19017904103a6ea76dc1dd110501a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fce8371e452d6eef2adf4aa6c6a3ca71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7f3fac858b4ebab01c8074d7a48702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14701ac9bf756d9936f561a6396d2e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9448bf1d6136b3a108e7ea60506ad39.png)
A.1 | B.2 | C.3 | D.4 |
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