题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215901-39072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215902-90716.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215901-39072.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215902-37868.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215902-79675.png)
过OA⊥MN,垂足为A,在
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215902-45710.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215903-41645.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215903-59870.png)
解得
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215903-11878.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215901-39072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215903-47152.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215904-91818.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215901-39072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215902-37868.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215853-51846.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215853-14851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215854-76789.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215854-21827.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215854-79460.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215854-49846.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215842-53076.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215842-33880.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215843-70182.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215842-33880.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215831-52813.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215832-41441.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215832-88078.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215832-95307.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215832-50173.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215824-11018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215824-13117.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215824-15639.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215810-44554.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215810-77815.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215811-53741.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215811-39113.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215811-31315.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215811-73042.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215812-63096.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215812-61356.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215812-91546.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215812-76477.png)
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