11-12高三·福建泉州·期末
1 . 计算![](https://img.xkw.com/dksih/QBM/2012/2/9/1570727760928768/1570727766245376/STEM/c0db8acc9043453ab71a26d01ae3670c.png?resizew=101)
______
![](https://img.xkw.com/dksih/QBM/2012/2/9/1570727760928768/1570727766245376/STEM/c0db8acc9043453ab71a26d01ae3670c.png?resizew=101)
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2010·福建南平·一模
解题方法
2 . 若
,椭圆
的右焦点为F,直线l的方程为x=m,点A在直线l上,线段AF交椭圆C于点B,若
,则直线AF的倾斜角的大小为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b9a8b9c82b9ccc9cfa1bb214c153a13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c3453c8299a6fa0e6e8466a4d156fe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97292f3682db1421caa92af184cebe02.png)
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