在①
,
,
;②
;③
三个条件中任选一个,补充在下面的问题中,并解决该问题.在
中,内角
的对边分别是
,且满足________.注:如果选择多个条件分别解答,按第一个解答计分.
(1)求角
;
(2)若
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce986626e776d5cfa4319d85d62ad3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b27f3e9e42cfdd7c126f9af2476fc14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b907456faac5d0995bd73f7da94c9b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c18f4e1a24fc4a8672e39bfdf5e2e1af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2793b77d558fe7051e0c33d058da4c43.png)
![](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)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
22-23高一下·福建福州·期中 查看更多[5]
更新时间:2023-04-17 15:32:29
|
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解答题-问答题
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适中
(0.65)
解题方法
【推荐1】已知
ABC三个内角A、B、C对应边分别为a、b、c,
,
.
(1)若
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(2)设线段AB的中点为D,若
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(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf530176292c760d6c2fbc9a364f2fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
(2)设线段AB的中点为D,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c8c2a0e18a52def508b021c67b2a04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.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】在△ABC中,
.
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(2)已知
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(1)求C的大小;
(2)已知
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解答题-问答题
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适中
(0.65)
【推荐1】在
中,
.
(1)求∠A;
(2)再从下列三个条件中选择一个作为已知,使
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条件①:
;
条件②:
;
条件③:
的面积为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c552a4604f89a59b89c1f67a4f5269a0.png)
(1)求∠A;
(2)再从下列三个条件中选择一个作为已知,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec16a357c5fe9ca70ab2c8c7b2b7edb.png)
条件②:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e80df2a4a2a42722dc835702a86c7e40.png)
条件③:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cf0a846c047627d83da67efb17b24a4.png)
您最近一年使用:0次
解答题-问答题
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适中
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名校
解题方法
【推荐2】记△ABC的内角A,B,C的对边分别为a,b,c,已知sinA=
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/31/8f2dbd35-18cf-4c1c-bdb6-242aa0a12100.png?resizew=218)
(1)求sinC;
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9868f77d5ab5073b6145f1c6d272122e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/31/8f2dbd35-18cf-4c1c-bdb6-242aa0a12100.png?resizew=218)
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【推荐1】
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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)
解题方法
【推荐2】在
中,内角A,
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对边的边长分别为
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,
,已知
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的长;
(2)求
的值;
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的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb648e02a0ddee9c7a7b88c571c9323.png)
(1)求边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(2)求
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(3)求
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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)
解题方法
【推荐1】在
中,角A,B,C所对的边分别为a,b,c,
.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bf8b8a34db79d07e63ebc0e152380ac.png)
(1)求角C;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
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解答题-问答题
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适中
(0.65)
解题方法
【推荐2】在
中,角
,
,
所对的边分别为
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,
,已知
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,
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(1)求角B的大小;
(2)若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
,求
的面积最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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(1)求角B的大小;
(2)若
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您最近一年使用:0次