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若是非零向量且满足()⊥,,则与的夹角是( ) A. B. C. D.
若
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128005413537/SYS201311031011280054135003_ST/0.png)
是非零向量且满足(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128005413537/SYS201311031011280054135003_ST/1.png)
)⊥
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128005413537/SYS201311031011280054135003_ST/2.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128005413537/SYS201311031011280054135003_ST/3.png)
,则
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128005413537/SYS201311031011280054135003_ST/4.png)
与
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128005413537/SYS201311031011280054135003_ST/5.png)
的夹角是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128005413537/SYS201311031011280054135003_ST/6.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128005413537/SYS201311031011280054135003_ST/7.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128005413537/SYS201311031011280054135003_ST/8.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101128005413537/SYS201311031011280054135003_ST/9.png)
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101119465447424/SYS201311031011194654474021_ST/images0.png)
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101119465447424/SYS201311031011194654474021_ST/0.png)
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