在锐角
中,角A,B,C所对的边分别为a、b、c ,
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff214d99784c6b23b7784bdaf3ed37a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcb8eaf13c684f7c554c4462840765fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2122e3f1e76a635e58e4d54aa594c552.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
2018高二·全国·专题练习 查看更多[2]
更新时间:2018-07-05 19:13:31
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单选题
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适中
(0.65)
名校
解题方法
【推荐1】已知向量
,
,
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6058a2d06b42c223208e37b901b7ff9e.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
解题方法
【推荐2】已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0516bd2f8da0bec9c3efe056b3f37e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c099009de2746d0eb55906a3e619ef85.png)
A.![]() | B.![]() | C.![]() | D.0 |
您最近一年使用:0次
单选题
|
适中
(0.65)
解题方法
【推荐1】在
中,角
的对边分别为
,
,
,且
,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/a862f92881d3f64bd5c25717f1b77f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b38439ca14d9be2591125f4fe5aa61d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825793ebd4bb376a09621f163ac990a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71e552a3b75f5b9a673918eebf5a00de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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单选题
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适中
(0.65)
解题方法
【推荐2】
的三内角
所对边长分别是
,若
,则角
的大小为( )
![](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/522828e9368f2601e86be928554de7c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次