在
中,角
的对边分别为
,
且
.
(1)求角
的大小;
(2)若
,求
的面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9178fc8b5d65aa75fa9196294a0db7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3470f8e8142a61cfd3d4aa1e1e203d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a5d3cb8d09449215d61149940c2138a.png)
且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/672d448e4ba92685d11cfec5985effad.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b482f10fcaa4dfa4429a074c526a772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9178fc8b5d65aa75fa9196294a0db7e.png)
11-12高二上·辽宁营口·期末 查看更多[6]
(已下线)2010—2011学年辽宁省营口市普通高中高二上学期期末教学质量检测理科数学(已下线)2011年山东省潍坊市三县高二上学期模块学分认定检测数学(已下线)2011-2012学年辽宁省庄河市第六高级中学高二开学初考试理科数学试卷山西省大同市2018-2019学年高一下学期期末数学试题人教B版(2019) 必修第四册 过关斩将 第九章 解三角形 9.1.2 余弦定理山西省朔州市应县第一中学校2019-2020学年高一下学期期中数学(文)试题
更新时间:2016-12-01 17:10:30
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【推荐1】在
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca836b2c48775b06b437ba25bd2c4ef.png)
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适中
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【推荐2】已知在△ABC中,内角A,B,C所对的边分别为a,b,c,在条件①
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/522cd8a5cc7cf4a6c43d900cd1b4c782.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aebe81d90dad0db8d1883ead8cc909f0.png)
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您最近一年使用:0次
解答题-问答题
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适中
(0.65)
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【推荐1】如图,在
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/d14c87af-3f03-4f48-8819-2ede9374f4a0.png?resizew=144)
(Ⅰ)求角
的大小;
(Ⅱ)若
,
,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/d14c87af-3f03-4f48-8819-2ede9374f4a0.png?resizew=144)
(Ⅰ)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f186ea827f7becafd1ac4955e22c6812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf7679c8b4b1e442ce4286d4b0e9c32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40560ea08d6cd8c1d4d9661ee6faaa3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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适中
(0.65)
【推荐2】在锐角
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次