如图,在圆
上取一点A(
,
),点B为点A关于y轴的对称点,E,F为圆O上的两点,且满足
,则EF的斜率为( )
![](https://img.xkw.com/dksih/QBM/2022/5/28/2989045036105728/2990114725396480/STEM/7ea72912-4631-42e4-a529-aa86b7f07a3f.png?resizew=234)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845782193de30099880576257e9f3e74.png)
![](https://img.xkw.com/dksih/QBM/2022/5/28/2989045036105728/2990114725396480/STEM/7ea72912-4631-42e4-a529-aa86b7f07a3f.png?resizew=234)
A.—2 | B.![]() | C.—1 | D.![]() |
2022·北京·三模 查看更多[2]
更新时间:2022-05-29 23:46:53
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【推荐1】已知经过两点
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【推荐2】已知
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【推荐1】设曲线
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【推荐2】已知直线
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