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已知非零向量与满足且=. 则△ABC为( ) A.等边三角形 B.直角三角形 C...
已知非零向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100020168521697/SYS201311031000201685216002_ST/0.png)
与
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100020168521697/SYS201311031000201685216002_ST/1.png)
满足
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100020168521697/SYS201311031000201685216002_ST/2.png)
且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100020168521697/SYS201311031000201685216002_ST/3.png)
=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100020168521697/SYS201311031000201685216002_ST/4.png)
. 则△ABC为( )
A.等边三角形
B.直角三角形
C.等腰非等边三角形
D.三边均不相等的三角形
考点分析:
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100012932523826/SYS201311031000129325238021_ST/0.png)
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