题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222217-72216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222218-25022.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222218-72387.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222218-75687.png)
解析
试题分析:由已知圆心为
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222218-51226.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222219-11340.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222159-75273.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222159-41193.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222159-37071.png)
(1)若圆C与直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222159-91564.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222200-80708.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222200-36967.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222200-77139.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222200-15443.png)
(2)在(1)条件下,是否存在直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222201-99874.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222201-80844.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222201-79049.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222201-96977.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222154-92457.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222154-63813.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222154-59354.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222154-72996.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222155-56837.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222155-41426.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222144-60003.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222144-58097.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222144-70617.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222144-89865.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222145-44386.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222136-73517.png)
(1)已知不过原点的直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222136-21290.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222136-14551.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222137-65495.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222137-84212.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222136-21290.png)
(2)求经过原点且被圆
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222136-14551.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222121-50737.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222121-81035.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222122-27647.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222122-17691.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222122-73016.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222122-45367.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222122-73016.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222122-56907.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222123-81510.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222123-14577.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222123-48140.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222123-81510.png)
(2)经过
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222123-19739.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222123-75028.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222123-20472.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222124-53251.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022222124-32777.png)
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