题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004954-33812.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004954-15939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004954-14135.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004955-51352.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004955-90479.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004955-79910.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004955-23474.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004956-35262.png)
解析
试题分析:要求直线与平面所成的角,按照定义要作出直线在平面上的射影,直线与射影的夹角就是直线与平面所成的角,本题中平面
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004956-52235.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004956-68126.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004956-52235.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004956-84495.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004956-71713.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004956-84495.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004957-35919.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004956-52235.png)
试题解析:如图建立空间直角坐标系,设平面
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004955-79910.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004957-76245.png)
直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004955-90479.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004955-79910.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004957-45916.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004957-29404.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004958-59696.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004958-94082.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004958-48027.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004958-41526.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004958-90816.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004959-31147.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004959-25141.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004959-94485.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004959-26991.png)
直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004955-90479.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004955-79910.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022005000-12476.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004946-75369.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004946-60718.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004947-62725.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004947-79291.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004947-35665.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004947-45517.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004948-89448.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004948-61519.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004941-56345.jpg)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004937-82591.jpg)
①AB⊥EF;
②AB与CM所成的角为60°;
③EF与MN是异面直线;
④MN∥CD.
以上四个命题中,正确命题的序号是________.
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004931-86750.png)
A.![]() | B.![]() | C.![]() | D.![]() |
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022004924-52850.jpg)
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