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已知A(3,0),B(0,3),C(cosα,sinα),若,则的值为( ) A...
已知A(3,0),B(0,3),C(cosα,sinα),若
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212129778029730/SYS201310232121297780297002_ST/0.png)
,则
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212129778029730/SYS201310232121297780297002_ST/1.png)
的值为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212129778029730/SYS201310232121297780297002_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212129778029730/SYS201310232121297780297002_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212129778029730/SYS201310232121297780297002_ST/4.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131023212129778029730/SYS201310232121297780297002_ST/5.png)
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