在
中,角A,B,C的对边分别为a,b,c,已知
,
,
.
(1)求
的值:
(2)在边AB上取一点D,使得
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c14a66ed4bd66df65bc42c4ac1ed15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e54a36173cd9b7b28e91619d715cb569.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e5d4f93699f8dcffb0e7840ca5597e.png)
(2)在边AB上取一点D,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4d0763facfa79f8c74283692f4a664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcfaf93da169b266db050f095be1dd37.png)
更新时间:2023-05-07 14:49:46
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适中
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【推荐2】已知
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【推荐1】已知
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(1)若
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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】在
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65f9c88edac18a30697feb5a9956b70b.png)
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75a3e6cb9a9e62299ef3a4c855c6deb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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