名校
解题方法
1 . 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
|
1278次组卷
|
8卷引用:浙江省名校新高考研究联盟(Z20名校联盟)2024届高三上学期第一次联考数学试题
解题方法
2 . 若向量
,
满足
,
,且
,则
与
的夹角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e806f5cf44bad87a5d34b1f6676b98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34fa8ea29001bb1f0c1e5157aff2fca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075e358bf8f0aab842e87ab3f0df903f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-01-05更新
|
728次组卷
|
2卷引用:山西省临汾市同盛实验中学2024届高三核心模拟(中)数学试题(六)
解题方法
3 . 在
中,
,
是
边上任意一点(
与
不重合),且
,则
的大小为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d32220fd969663f42cd619f8cc8b355c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6b93dbe5272a5167ff4e2918bec864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b13532a1060b29863cce43024a04b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023高三·全国·专题练习
解题方法
4 . 四面体
中,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20324c4262b72d72b6624ef90675827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
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名校
5 . 已知
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9139dbaedc10534d1f799dbce02818e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1d715863fff24155c89919acc94dc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
A.4 | B.![]() | C.![]() | D.-4 |
您最近一年使用:0次
2023-12-31更新
|
739次组卷
|
4卷引用:江苏省盐城中学等四校联考2024届高三上学期12月阶段检测数学试题
江苏省盐城中学等四校联考2024届高三上学期12月阶段检测数学试题江苏省苏州市相城区南京师大苏州实验学校2024届高三上学期期末模拟数学试题(已下线)第04讲 平面向量基本定理及坐标表示-《知识解读·题型专练》(人教A版2019必修第二册)(已下线)模块一专题2 《平面向量基本定理与坐标运算》 【讲】(苏教版)
解题方法
6 . 设
均为非零向量,且
,
,则
与
的夹角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c8feca6e03d79ad46b8e7ecc524f4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31d0cf8e8152526822ee4bdc1fbc57b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
7 . 已知
,
,若
与
垂直,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb1304073b66c65cda5671ac2a9af0cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9904bba15ae4c29ce6a0b1c64edcf9c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a06c8eae3652486cf9e416ce3a8ffc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
您最近一年使用:0次
2023-12-27更新
|
563次组卷
|
2卷引用:江苏省淮安市淮阴中学、姜堰中学等三校2024届高三上学期12月阶段性测试数学试题
8 . 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)
您最近一年使用:0次
名校
解题方法
9 . 已知向量
满足
与
的夹角为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3c6bd21d9c27a68b970f446f04d6df.png)
________ ,若
,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e8b95a61af300412fc65f846089028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b2feffe8b6beed7e04c76aeddd094a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3c6bd21d9c27a68b970f446f04d6df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66a371d3aabe9f8f7f652ab59243f48a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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10 . 已知向量
,且
与
垂直,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e9a985605a38ecb1dca2d6efcfd2c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afae9db82464afb37d387f6cbedc8139.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
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