题目
题型:不详难度:来源:
设锐角三角形ABC的内角A,B,C的对边长分别为
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174156-18579.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174156-60257.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174156-82000.gif)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174156-47184.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174156-41393.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174156-43593.jpg)
解析
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174151-74288.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174151-64081.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174152-64351.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174152-51006.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174152-76399.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174152-23643.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174140-85412.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174141-55347.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174136-91939.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174136-80150.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174136-43302.gif)
A.
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174137-27416.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174137-56421.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174137-27619.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174137-76731.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174138-12242.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174125-23245.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174125-61674.gif)
A.6:5:4 | B.7:5:3 | C.3:5:7 | D.4:5:6 |
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174029-94470.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174029-47407.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174030-25302.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174030-72917.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174030-89327.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174030-33300.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019174031-64815.gif)
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