名校
1 . 已知点
在直线
上,点
的坐标为
,
为坐标原点,则
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b0198675724503b8a4abdd5b57b459.png)
______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d03749409b1c3db6f428e8af0a1c367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57d3dad5b8c58aa6b2fa28132f532fc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b0198675724503b8a4abdd5b57b459.png)
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2017-07-03更新
|
435次组卷
|
2卷引用:2020届安徽省六安市第一中学高三下学期模拟卷(七)数学(文)试题
解题方法
2 . 已知
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba18fd9e1830b6d3587b65f28ca7bb87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c6a798e5c015d88b56d6af677762bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bab36a10bbc324a38d61098d1d2c8dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
您最近一年使用:0次
11-12高三·安徽·阶段练习
3 . 若向量
,且向量
满足
,则
的取值范围是________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f726edf8cca26e1011faa7101c506e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c749bf931067fe018d6c0cd1f1d17c96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7d8b42c85013ba07ba18e5e46d8716.png)
您最近一年使用:0次
11-12高三上·安徽六安·期中
4 . 已知点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/958b137fd957f6638dd8773fadd4622b.png)
(1)若
,求
的值;
(2)若
,其中
是原点,且
,求
与
的夹角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/958b137fd957f6638dd8773fadd4622b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f45ace1a50cd57907ee101e54ff5df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9146fc0a63e5c14a8fa46573e60c07ba.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be80d9aa5ef9e2c53735d83cf960aa6.png)
![](https://img.xkw.com/dksih/QBM/2011/12/20/1570624672628736/1570624678002688/STEM/3f1b3f136d694a8ca3ca3eb4763382b1.png?resizew=16)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281805b9dfe2162215dfe6b5ad6d7b03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794efd8cf0cc386faa170d01f357b1c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7195a0b5b59c9462b9faaf5a9fcfc6e0.png)
您最近一年使用:0次