在
中,角A,B,C的对边分别为a,b,c,若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5251b0967363483cfa7d77382ad65694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3711c8ba16405959bcb0b70385da1d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0180ea0e6348aac8c745c9e3b3d8d0ec.png)
A.![]() | B.![]() | C.1 | D.![]() |
更新时间:2023-05-02 17:51:00
|
相似题推荐
单选题
|
较易
(0.85)
解题方法
【推荐1】已知三个向量
共线,其中
,
分别是
的三条边及相对三个角,则
的形状是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f690b73329d850f15d61cca2c2697f6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.等腰三角形 | B.等边三角形 |
C.直角三角形 | D.等腰直角三角形 |
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较易
(0.85)
名校
解题方法
【推荐2】已知△ABC的三个内角A、B、C所对的边分别为a、b、c,若b=1,c=
,且
则a=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4022d19de2e3ca37d2ad9d6f511e4bbb.png)
A.1或![]() | B.1或![]() | C.1或2 | D.![]() ![]() |
您最近一年使用:0次
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较易
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解题方法
【推荐1】如图,在平面四边形
中,
,记
与
的面积分别为
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a197adb6e5dd1d646741b9ec64dfec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3637753af5ce86be9c23a9beb6b5067.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ae89bd2dd0a18e1afb5b1a1abd0efd.png)
A.2 | B.![]() | C.1 | D.![]() |
您最近一年使用:0次
单选题
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较易
(0.85)
解题方法
【推荐2】在
中,已知
,
,
,则角
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0fc97c111826fb6d39bf72ed9ad5585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b86d43790babcdbbdc03493ee70928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.30° | B.120° | C.60° | D.150° |
您最近一年使用:0次