在
中,角A,B,C所对的边分别为a,b,c,且
.
(1)求角C;
(2)若
,
的面积为
,M为AB的中点,求CM的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729a32dfb57afd9e400fd3b557e84453.png)
(1)求角C;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f289ef19c7418a898ea18747aa76e783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
21-22高一下·陕西西安·期中 查看更多[2]
更新时间:2022-05-06 15:20:08
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适中
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【推荐1】在
中,内角A,B,C所对的边分别为a,b,c,已知
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(1)求
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(2)如图,点M为边
上一点,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c48c52cfe1c12aedd6ddb08cbadc57a.png)
(2)如图,点M为边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47909c45f87918700bb255acc2359621.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c25b6cd9a29888b59edd841f4254090.png)
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【推荐2】已知a,b,c分别为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cf1f865bafd4a820406d336d99f8091.png)
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【推荐1】已知△ABC的内角
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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】在
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适中
(0.65)
解题方法
【推荐1】在
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,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/23e9e3dd5273571231c65a54353dabdd.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9597cc64469c379d47dfc6b3f27feee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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适中
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适中
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【推荐1】已知向量
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(0.65)
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【推荐2】已知
的内角
的对边分别为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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(2)若
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