名校
1 . 已知非零向量
满足
,若
,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b477daf760a3f4be2f512d82912579f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761e8ff96c96ac26682b521288a01bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71068735cd704fda3ae8dfb6a0445a31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc9a98b2197ff21ca9dd85768f3d1f6.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
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2024-04-24更新
|
456次组卷
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4卷引用:陕西省西安市第一中学等校2023-2024学年高三下学期4月阶段性测试文科数学试题
名校
解题方法
2 . 已知向量
,
,则
是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28b6e99d71eaa7784dab1e3808a2ad4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f52d0c5864f0ee6b1d41ec4275fdb05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a45684ea7efd781b964a32d7e20280d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94f694e42b337503dfb7466a3da23ab4.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
2024-03-21更新
|
1252次组卷
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5卷引用:广东省深圳市光明区高级中学2023-2024学年高三下学期5月模拟考试数学试题
名校
3 . 已知向量
,
,其中
,
,
,若
,则实数
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21f9f9c6ae2d41b39849f5c74cbb09c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bde69caae910b382b6c89929a8a9a8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1081673ae9cc404c790ae769c1c40c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc1b0ef6993cbc850eaa7b8075ae71a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/270f886fe20d53a00c7596d320672cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a4d070c5939bb0ec4a9d40d7e3c7d3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2023-11-26更新
|
260次组卷
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3卷引用:山东省日照市2024届高三上学期期中校际联合考试数学试卷
山东省日照市2024届高三上学期期中校际联合考试数学试卷山东省济宁市曲阜师大附中2024届高三上学期第五次教学质量检测数学试题(已下线)考点3 平面向量的数量积 --2024届高考数学考点总动员【练】
解题方法
4 . 若平面向量
,
,则
与
夹角的正切值是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd71cbaab8fc3b28f8b5ba3d53506ede.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67828a1da294ff71d192ac3c45b6f74c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
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解题方法
5 . 已知向量
,
,
,
,
与
的夹角为120°,若
,则
( )
![](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/c02af59613596682734297aebc578801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e405db6c09d6ab5739cabbb63cd3b3bd.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/4048243b09dfcfe2f7d1e43ccc4e3441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-08-27更新
|
1273次组卷
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8卷引用:重庆市永川双石中学校2024届高三上学期半期考试(期中)数学试题
6 . 已知向量
是单位向量,且
与
垂直,
与
的夹角为135°,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d6fce004c47849c29ebd8d5d7c16e98.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed492f7b29166ba5c1f0023b05a439c5.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/6d6fce004c47849c29ebd8d5d7c16e98.png)
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解题方法
7 . 在平行四边形ABCD中,
,
,
,E为AB的中点,若
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac94e7b9fbc2ad39be4f935f8cb5216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/689a912bada8ad9041f352c6b4baa182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876bb8ce0ca53475fa091ffd18bdc94a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
8 . 关于平面向量,有下列四个命题,其中说法正确的是( )
A.![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若点G是![]() ![]() |
D.若向量![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
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解题方法
9 . 已知非零向量
,
满足
,且
,则
与
的夹角为( )
![](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/dbf4d1babff1959bc7a895b0212c6e2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2794a63e64fdbbf2a9118e43a3770f45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-11-26更新
|
471次组卷
|
2卷引用:河北省沧衡八校联盟2023-2024学年高三上学期11月期中考试数学试题
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解题方法
10 . 已知非零向量
、
满足
,且
,则
与
的夹角为( )
![](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/b86da200055ed7d33436bb20e4085f95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba7466f3ffa97e826620e45cd4134dea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-11-24更新
|
794次组卷
|
3卷引用:广东省东莞中学、广州二中、惠州一中等六校2023-2024学年高三上学期11月期中联考数学试题