题目
题型:不详难度:来源:
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134322-67329.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134316-22647.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134316-33746.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134316-56064.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134316-44579.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134317-59018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134317-18940.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134317-98357.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134317-83696.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134301-67096.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134309-88481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134243-30257.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134243-90008.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134243-98728.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134244-85584.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134244-78951.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134244-77894.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134244-33341.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134245-73856.png)
(1)求证:平面
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134245-86019.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134245-33480.png)
(2)若平面
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134245-80557.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134245-33480.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134245-66831.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134246-22642.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134237-66208.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134238-89812.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134238-33397.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134238-37999.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134237-66208.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134238-71570.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134237-66208.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134233-75365.jpg)
A.arcsin
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134233-44540.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134233-44540.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134233-53182.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021134233-53182.png)
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