题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155837-91909.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155837-78408.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155837-78408.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155838-87544.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155838-52694.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155839-57874.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155839-81156.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155833-88962.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155833-68264.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155824-98187.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155825-74519.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155825-51074.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155824-98187.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155825-74519.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155825-97297.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155825-74519.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155825-51074.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155825-53318.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155825-99531.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155826-51804.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155824-98187.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155826-85895.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155826-20480.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155825-74519.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155826-60362.png)
(1)建立适当的平面直角坐标系,求△
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155827-33325.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155827-18072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155827-12842.png)
(2)当△
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155827-33325.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155827-18072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155827-12842.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155827-92489.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155827-75115.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155827-18072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155825-51074.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155828-38791.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155818-35729.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155819-54556.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155819-81861.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155813-83934.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155814-25244.png)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155807-93616.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155807-96953.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155807-74394.png)
A.![]() | B.6 | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022155808-17587.png)
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