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设双曲线C:(a>0,b>0)的右焦点为F,O为坐标原点.若以F为圆心,FO为半...
设双曲线C:
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231426650399701/SYS201311012314266503997007_ST/0.png)
(a>0,b>0)的右焦点为F,O为坐标原点.若以F为圆心,FO为半径的圆与双曲线C的一条渐近线交于点A(不同于O点),则△OAF的面积为( )
A.ab
B.bc
C.ac
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231426650399701/SYS201311012314266503997007_ST/1.png)
考点分析:
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