在
中,内角
的对边分别为
.已知
.
(1)求
的值;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cbed80078591be4e4f033d55f8ae245.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c181f86de3c96a7ef7a1a04c3a438f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca8940dba59854a371c9b7e0217676a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
21-22高二上·陕西汉中·期中 查看更多[5]
陕西省汉中市2021-2022学年高二上学期期中校际联考数学试题(已下线)第14讲 正弦定理(已下线)2.6.1余弦定理与正弦定理-正弦定理(第2课时)河北省邯郸市大名县第一中学2022-2023学年高一下学期3月月考数学试题青海省西宁市海湖中学2022-2023学年高一下学期第一阶段学情考试(月考)数学试题
更新时间:2022-12-09 07:11:33
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解题方法
【推荐1】如图,在四边形
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从①
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;②
,
;③
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这三个条件中任选一个,补充在上面的问题中并作答.(注:如果选择多个条件分别解答,按第一个解答计分)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
从①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454328a8e75953fdb0835ce80d9566e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6964b99181d039fe8c5ed5fe2bb00f1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc7f54acef4e40aad465ffe5f8b4b22.png)
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【推荐2】三角形ABC中,三个内角A,B,C的对边分别是
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名校
【推荐1】已知函数
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/71354a21-76f6-4766-8c34-73171fc1e914.png?resizew=199)
(1)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8433b523c769baf59ab8cab721f9dc37.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/71354a21-76f6-4766-8c34-73171fc1e914.png?resizew=199)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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