题目
题型:不详难度:来源:
![](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.![]() |
答案
解析
试题分析:由
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215824-11018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215825-76233.png)
所以圆心坐标为
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215826-13596.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215826-34194.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215824-13117.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215826-34471.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215826-15943.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215827-94521.png)
核心考点
举一反三
![](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)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215801-65198.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215802-41559.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215802-81104.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215755-25153.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215755-34429.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215755-33363.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215755-25153.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215747-70518.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215747-95173.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215747-31631.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215747-62657.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215748-10222.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215747-70518.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215748-44136.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215748-58746.png)
(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215748-10222.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215747-70518.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215748-10222.png)
(2)当弦
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215748-11673.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215747-62657.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215748-10222.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215744-41849.png)
(1)求直线CD的方程;
(2)求圆P的方程.
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