题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003508-63796.png)
(Ⅰ)求证:直线AB是⊙O的切线;
(Ⅱ)若tan∠CED=
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003508-47099.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003509-31641.png)
解析
试题分析:(1)连接
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003509-81602.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003509-90779.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003509-12513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003510-49876.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003510-53275.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003510-49876.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003510-33682.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003510-11554.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003509-12513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003511-50010.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003511-50010.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003509-90779.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003509-12513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003511-79695.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003511-96346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003511-11510.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003512-48823.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003511-50010.png)
试题解析:(1)连接
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003509-81602.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003510-53275.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003510-49876.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003509-90779.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003509-12513.png)
(2)因为
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003509-90779.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003509-12513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003511-79695.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003511-96346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003511-11510.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003512-48823.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003512-74503.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003512-87891.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003512-41770.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003509-12513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003513-56426.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003513-44160.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003513-57963.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003513-34514.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003514-51883.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003514-33748.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003509-31641.png)
核心考点
试题【如图,直线AB经过⊙O上的点C,并且OA=OB,CA=CB,⊙O交直线OB于E、D,连结EC、CD.(Ⅰ)求证:直线AB是⊙O的切线;(Ⅱ)若tan∠CED=,】;主要考察你对圆锥曲线性质探讨等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003456-25700.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003456-38106.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003457-54423.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003457-58943.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003457-89443.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003457-24363.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003458-91709.jpg)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003458-41564.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003458-65332.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003459-24188.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003459-70533.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003459-99711.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003448-14840.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003448-47046.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003440-29565.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003437-65134.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108003432-66073.jpg)
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