名校
1 . 已知
是方程
的根.
(1)求
的值;
(2)若
是第四象限角,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f798a9af75a091a8be0b71f2038260.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a4d916e9b8739a4dc7176a3c2cff41.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e161ed79ed31d97657512be87aedece.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30e4345875f6a60c99e9914e3e5a9677.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf1f72bebfd25cbb438d126ba5e33b2b.png)
您最近一年使用:0次
2023-10-26更新
|
460次组卷
|
3卷引用:甘肃省定西市临洮中学2024届高三上学期10月月考数学试题
名校
2 . 在△ABC中,角A,B,C所对的边分别为a,b,c,已知
.
(1)求b;
(2)求sinA的值;
(3)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7adac1c4fd05c1056c789a5fd5744cb6.png)
(1)求b;
(2)求sinA的值;
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e437ffb9bff532998c35a9bf756a1e.png)
您最近一年使用:0次
2022-03-27更新
|
808次组卷
|
3卷引用:甘肃省定西市临洮中学2021-2022学年高二上学期第二次月考理科数学试题
名校
解题方法
3 . 已知
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/941647c1647511a05d56a58f0a21472d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b891b0712d2e434221de14e2d013fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec4d68bd474be9310959977b6b01efdf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-03-27更新
|
227次组卷
|
3卷引用:甘肃省定西市临洮中学2021-2022学年高二上学期第二次月考理科数学试题
4 . 已知向量
,
,
,
(1)若
,求
的值;
(2)若
,求
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d12b7a0dcaa4cee7c16d33d03654595c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f129ad3a250d06493658867fac543ec6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc8d23a542f27fe8b9dba1bf78a44c7b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069da5c624837df29947b7b8bf722097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aef681e03396ab434adb3d28bd26150.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32b5f56519aa4ba7c0440874d8e6007.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec103929f6865820eb2d2adcf866e037.png)
您最近一年使用:0次
2020-02-23更新
|
184次组卷
|
2卷引用:甘肃省定西市临洮县文峰中学2021-2022学年高一下学期期中数学试题