题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195025-16696.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195025-49425.gif)
答案
解析
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195013-13935.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195013-52241.gif)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195013-48453.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195014-41308.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195014-49111.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195013-52241.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195014-43204.gif)
(2)若直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195014-69503.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195014-84262.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195004-28017.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195004-50931.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195005-26431.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195005-89345.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195005-85616.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195006-58778.jpg)
A.![]() | B.![]() | C.![]() | D.2 |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023195000-33897.gif)
(A)15° (B)30° (C)60° (D)45°
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194953-31599.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194953-74474.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194953-85147.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194953-92390.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194953-31599.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194953-94834.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194953-50814.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194953-96469.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194954-53757.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194954-60040.gif)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194954-60040.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194953-94834.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194936-16643.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194936-91174.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194936-25257.gif)
(Ⅰ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194936-26139.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194936-67020.gif)
(Ⅱ)设过定点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194937-13446.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194937-79865.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194937-83265.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194937-93062.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194938-45095.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194938-74724.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194937-79865.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194938-26482.gif)
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