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已知A1,A2分别是双曲线的左、右顶点,P为直线(c为半焦距)上的一点,△A2P...
已知A
1,A
2分别是双曲线
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102211601246806/SYS201311031022116012468003_ST/0.png)
的左、右顶点,P为直线
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102211601246806/SYS201311031022116012468003_ST/1.png)
(c为半焦距)上的一点,△A
2PA
1是底角为30°的等腰三角形,则双曲线E的离心率为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102211601246806/SYS201311031022116012468003_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102211601246806/SYS201311031022116012468003_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102211601246806/SYS201311031022116012468003_ST/4.png)
D.2
考点分析:
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102211601246806/SYS201311031022116012468001_ST/0.png)
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102211601246806/SYS201311031022116012468000_ST/0.png)
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102211601246806/SYS201311031022116012468000_ST/2.png)
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102211601246806/SYS201311031022116012468000_ST/3.png)
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