在
中,已知
,
是方程
的两根,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a24a8f5e8fb89381f8add6549170345.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03005d17bf564371ad29fea41f5c650.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3f06d9683883192bd22f97ed40d4a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721e29b775e696045f44a4b1e7f74ef2.png)
20-21高一·全国·课后作业 查看更多[2]
更新时间:2021-11-11 21:44:31
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解答题-问答题
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适中
(0.65)
名校
【推荐1】在锐角
中,内角A,B,C的对边分别为a,b,c,且
,
.
(1)求角
的大小;
(2)若
,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08ce80e91fdf435a8e3ec05be990e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a4762c4f8f5d8fcfb28a54e5159d307.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e168d0526b037e91a108cfafb071eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87997b44fdf1a4f5e9a1344c03ab4d82.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐2】已知
,且
.
(1)求
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(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/612fd36aeb83099c4644c076db691612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9330f5a1902fe99fc5edd744fbe9146.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36736e66684f46306a09694c4c39a203.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
解题方法
【推荐1】在△ABC中,角A,B,C的所对的边分别为
,且
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(Ⅰ)求
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(Ⅱ)若
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的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e0fe4c69bc5f148bb5fd522d553ef1.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1c02309c374b19ea7973cfeac9401f2.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd5b9bbd3d22bd2cef53dd4b9691257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbff84327e964f912a54032e76ccc9.png)
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解答题-问答题
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适中
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解题方法
【推荐2】已知
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(2)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/612fd36aeb83099c4644c076db691612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a892dbcef7934d97016bb190d94e0bc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/353acadc9793577428b6ac2aeac3648e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c7793bfd801e2592b1e1e3f61a308ce.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bad3c1424841f905de42b18326f9acfa.png)
您最近一年使用:0次