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如图,△ABC中,∠B=90°,∠C=30°,AB=1,将△ABC绕顶点A旋转1...
如图,△ABC中,∠B=90°,∠C=30°,AB=1,将△ABC绕顶点A旋转180°,点C落在C′处,则CC′的长为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102724095182576/SYS201311031027240951825015_ST/images0.png)
A.4
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102724095182576/SYS201311031027240951825015_ST/0.png)
B.4
C.2
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102724095182576/SYS201311031027240951825015_ST/1.png)
D.2
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102724095182576/SYS201311031027240951825015_ST/2.png)
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