解题方法
1 . 已知向量
,
,若
,
的夹角为钝角,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/303e0f7b92a9fb0bca726e1de9d9df98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d830f1864615e29ce030b533bed3834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 已知向量
,
,则“
”是“
和
的夹角是锐角”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3c8f3a0ebe2ba858d21357c9ec3217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22541e15379c71d6293b38ee1118fd96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a31acb92a54dc541176a3eb03c32697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.既不充分又不必要条件 |
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2024-06-13更新
|
294次组卷
|
2卷引用:江苏省苏州市2024届高三下学期第三次模拟检测数学试卷
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解题方法
3 . 已知向量
,若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d74192cafb516d89228dc3bb63392fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af554b169138c17d79ce9656b68ab27c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
4 . 若向量
,则
的取值集合为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9688a66c67bcc6c9319b2cc7b105741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-05-30更新
|
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2卷引用:江苏省镇江市实验高级中学2023-2024学年高一下学期5月月考数学试卷
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解题方法
5 . 已知向量
,
,若
与
共线且反向,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/750079fe7868fd50c1958bdc4972248d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92ba5e6df3bdc570aea6bcc93526affb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7a1df960feef63dec4790d63f52279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b8a88a16125366536cb4ad658e0cf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.4 | B.2 | C.![]() | D.![]() |
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2024-05-12更新
|
731次组卷
|
4卷引用:江苏省宿迁市泗阳县两校联考2023-2024学年高一下学期第二次学情调研(5月月考)数学试题
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6 . 如图,设
,且
,当
时,定义平面坐标系
为
的斜坐标系,在
的斜坐标系中,任意一点
的斜坐标这样定义:设
是分别与
轴,
轴正方向相同的单位向量,若
,记
,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/572fbfca53e0b5c85d0155e956d63447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d26c9fc8cfa002f40ea3908575c8ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ca0fbe6fbda5d57855ee78caa84bf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae52d95fe65a807ed97169735493bc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5253a9a71037d60059b60237824193b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af486b597a0afacc09ee662231301cb0.png)
A.设![]() ![]() ![]() |
B.设![]() ![]() |
C.设![]() ![]() ![]() |
D.设![]() ![]() ![]() ![]() ![]() |
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解题方法
7 . 已知向量
,
.若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80d769ab21af5365d3c00dc617375ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61ddffa662dfe68c43cf7df74d64060e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1afa49dbaa99a0d7a7a6d18b3fe42091.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
A.![]() | B.![]() | C.3 | D.6 |
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2024-05-07更新
|
1876次组卷
|
3卷引用:江苏省南京市2024届高三第二次模拟考试数学试题
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解题方法
8 . 在下列各组向量中,可以作为基底的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
9 . 已知向量
,
,若向量
,
共线,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f95da2d0043353dd2b9136fb848eb7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679665db5b60d3858de51d3224c0bc61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.![]() | B.![]() | C.![]() | D.18 |
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2024-04-26更新
|
885次组卷
|
3卷引用:江苏省淮安市马坝高级中学2023-2024学年高一下学期期中考试数学试题
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解题方法
10 . 向量
与
平行,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3c8f3a0ebe2ba858d21357c9ec3217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee25a29ba8b61213252c134278cf73b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.1 | B.![]() | C.3 | D.![]() |
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