题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032919-47448.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032919-25433.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032919-58395.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032920-60042.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032919-47448.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032920-26513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032920-10761.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032920-49794.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032920-10761.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032921-40657.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032920-10761.png)
试题分析:(1)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032921-90444.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032919-47448.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032919-25433.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032921-26434.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032921-95336.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032921-26434.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032922-70694.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032921-26434.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032922-78172.png)
(2)由余弦定理
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032922-48433.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032922-50473.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032919-47448.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032920-26513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032922-60211.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032923-29582.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032921-26434.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032923-22743.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032923-56382.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032921-26434.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032923-54104.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032914-76815.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032914-87074.png)
A.一解 | B.两解 | C.一解或两解 | D.无解 |
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032903-93123.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032904-38371.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032904-55398.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032904-61123.png)
(1)求角
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032904-87117.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032904-99095.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032904-37819.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032850-14163.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032850-79517.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032850-29220.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032851-34254.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032851-19261.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032851-42927.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032851-35345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032842-62196.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032843-60471.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032843-88787.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032843-82132.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032842-62196.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032843-55861.png)
(Ⅰ)求角
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032843-47871.png)
(Ⅱ)求
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032844-14329.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032833-35796.png)
(Ⅰ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032833-63507.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032833-51993.png)
(Ⅱ)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032833-21667.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032833-49845.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032833-50322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032834-99904.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032834-42900.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020032833-21667.png)
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