设
的内角A,B,C所对的边分别为a,b,c,
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea43cdd29ad1e9d4658072c68097aa74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d16788e9a46f27571e4a7cf56dc48d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
A.![]() | B.![]() | C.![]() | D.![]() |
21-22高二下·安徽安庆·期末 查看更多[2]
更新时间:2022-07-24 20:41:45
|
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单选题
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较易
(0.85)
名校
解题方法
【推荐1】在
中,角
的对边分别为
,若
,则
的形状为( )
![](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/dc9af3d3b18d52c3bf952aead17a379e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.直角三角形 | B.等腰三角形 | C.等腰直角三角形 | D.等边三角形 |
您最近一年使用:0次
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【推荐2】设
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15890f142095bf84b8be7f4a89cc7ea5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0757453263d2b7dc20c4482290ffb4c5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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【推荐1】在
中,角
所对的边分别为
,若
,
,
,则
的面积为( )
![](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/2681f0d1732bcaa8d6362fbd1fa6caa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a74c4f3040823667e281483bf24ee35f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.1 | C.![]() | D.2 |
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【推荐2】△ABC中,角A,B,C所对的边分别为a,b,c,若B=A+
,b=2a,则角B= ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3903d7253d94c78ad9f0c2a53819c8d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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【推荐1】在
中,
(a,b,c分别为角A,B,C的对边),则
的形状为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fc53f27811afe330cb5a767b0c6906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.等边三角形 | B.直角三角形 |
C.等腰三角形或直角三角形 | D.等腰直角三角形 |
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【推荐2】在△ABC中,a=3,
,A=60°,则cosB=
![](https://img.xkw.com/dksih/QBM/2016/3/8/1572526273839104/1572526279589888/STEM/0d6230ad4d3e455a864f6c71dbf8eac3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次