题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152327-14111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152327-53324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152327-87161.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152327-86721.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152328-98299.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152328-55569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152328-98967.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152328-46432.png)
(1)求角
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152328-55569.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152329-10556.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152327-14111.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152329-64053.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152329-35981.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152329-68327.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152330-59417.png)
(2)由
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152330-69498.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152330-71636.png)
解:(1)由
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152330-80638.png)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152331-38754.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152331-51418.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152331-38577.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152331-20802.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152332-18161.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152330-71636.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152332-13152.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152321-45609.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152322-23730.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152322-66528.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152322-27482.png)
A.450 | B.600 | C.300 | D.150 |
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152314-24079.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152314-13230.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152314-59563.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152246-43064.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152246-44957.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152246-25224.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152246-29357.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152247-53766.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152242-31943.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152243-21261.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152243-60186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152222-55966.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152222-85886.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152222-29028.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152222-77690.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152223-76445.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019152223-82352.png)
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