名校
解题方法
1 . 已知A,B,C为平面内三点,点A(0,1),
.若平面内存在唯一点
使
,且
,则点B的坐标可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bdd6bf83abea75fe152cc791c6a5146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf0d139c9810361b4971904a943856b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532106975e41f0ba906233b4aca359d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92d7d9ee5c71767238b7b7cccfbb6bb2.png)
A.(1,0) | B.(1,-1) |
C.(-1,-1) | D.(-1,2) |
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