解题方法
1 . 我国著名数学家华罗庚曾说过:“数缺形时少直观,形少数时难入微,数形结合百般好,隔离分家万事休”. 数学中,数和形是两个最主要的研究对象,它们之间有着十分密切的联系,在一定条件下,数和形之间可以相互转化,相互渗透. 而向量正是数与形“沟通的桥梁”. 如图,在
中,
,若
为
中点,
与
交于点
,且
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ee284488e3112e1b450a8be8af85319.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e40f20f61d6b56cfcc484fc39c38cb35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe6d728b430549f00bb9c0a7bf8bf7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377962502ccf0435ed3bc89ec4fe594d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c9d4bae362216d12bb5bb9c0e2326b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ee284488e3112e1b450a8be8af85319.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/24/40e7172e-3f55-4566-a256-ffcb317ea36b.png?resizew=169)
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名校
2 . 已知平面向量
.
(1)若
与
垂直,求
的值;
(2)若向量
,若
与
共线,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2338d8f0a2b6eb65ffd5ed7d9fd7a28c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d108e523626be0b40be9b3543ce12524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4e49d17d4ad440d37c6f4bc8daba25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eb66e97cfb69b8a59770c6ac1d9b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cd8bbf47b69bbd7a6263b041290d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdbdb82455bba02bddce8d3cca6affbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc23a04cdac6439ea170e799f1c1df5.png)
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2023-08-22更新
|
531次组卷
|
3卷引用:云南省保山市腾冲市2022-2023学年高一下学期期中教育教学质量监测数学试题
3 . 设x,,向量
,
,
,且
,
,则向量
与
的夹角大小为
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4 . 已知两个不共线的向量
,
满足
,
,
.
(1)若
,求角
的值;
(2)若
与
垂直,求
的值;
![](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/9338520b3ccd2d16e0db9acf8fdd1465.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a21fa3b82cf8423078bccacb83e71f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388d3d213a231cccf854a29eef611d01.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d76ee2e81f447f84a3e0b39c0388ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4e49d17d4ad440d37c6f4bc8daba25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34ed42e7d4d2569b719525054cb2e312.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b195aa36a3c2753ebf08cb464c52ad1e.png)
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5 . 如图,在平行四边形ABCD中,
,
,
,
,
,
(1)求
的值;
(2)若
,
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d8a8c17891ffbda9b616bee26d67e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e503b5f39429c162a82f047195e294.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2a5052f89125e4e26d2bfcc6273cb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5043cd88f58eca07a3e426d89082b176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b340bc0436599e2da6d3a807d7783e43.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/13/44de8d7b-cbc9-42f2-84ce-9a427828d03c.png?resizew=140)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29276b43a2950ed71f0f9629a35dfa74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b113dc271cf51b3018bd1de14edf73ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e9eac78c0579af0ee08a09112453bbb.png)
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6 . 已知
,
.
(1)已知
,
,在所给直角坐标系中标出A,B两点的位置;
(2)求
;
(3)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e151bd95e2f13b44d430e6a9ee5abdf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8692ef8acd42019a44b6d064d980b396.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/11/e01066eb-9e82-451e-8b75-de5961d6206a.png?resizew=174)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14390e9b6b44472bdc7a131133ab39b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9206f052cc7298fdf9049f9386f53928.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd6407eaee0643aa6efe66eb2be3a510.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16111d1425b87ba82ea6a706d1dfb3ef.png)
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解题方法
7 . 已知
,向量
与
垂直,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6e9907f03182bbf6a2182dda72be91b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2555426ef9607377b02bcae1de8f6ca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d108e523626be0b40be9b3543ce12524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
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2023-08-11更新
|
453次组卷
|
3卷引用:云南省曲靖天人高级中学2022-2023学年高一下学期期中考试数学试题
解题方法
8 . 已知
是边长为4的等边三角形,E点满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bda041270e4fa25f1f6c090bbfb5456.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6fb9a0ea0b6d0545022dad953602389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bda041270e4fa25f1f6c090bbfb5456.png)
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解题方法
9 . 在
中,
为
的中点,
为
的中点,设
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3adc4ed291596abf3bb93ae7a075d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc03a3ba496faee748a8d63e5d4fa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/658ff9921ff96972b0fc95360bb0c65b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-08-09更新
|
2051次组卷
|
10卷引用:云南省大理白族自治州大理市大理白族自治州民族中学2023-2024学年高一下学期5月期中检测数学试题
云南省大理白族自治州大理市大理白族自治州民族中学2023-2024学年高一下学期5月期中检测数学试题广东省深圳市龙岗区德琳学校2022-2023学年高一下学期期中数学试题江西省萍乡市安源中学2022-2023学年高一下学期期中考试数学试题(已下线)第6.3.1讲 平面向量基本定理-精讲精练宝典(已下线)6.3.1平面向量基本定理(分层作业)-【上好课】天津市和平区汇文中学2023-2024学年高一下学期第一次月考数学试题湖北省武汉市第六中学2023-2024学年高一下学期4月月考数学试卷江苏省无锡市第一中学2023-2024学年高一下学期期中考试(艺术班)数学试卷新疆生产建设兵团第二师八一中学2023-2024学年高二上学期8月开学考试数学试题甘肃省定西市临洮县2023-2024学年高二上学期暑期学习质量检测数学试题
10 . 已知向量
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45046653979db5b2ba63e98695911ad.png)
A.![]() | B.![]() |
C.![]() | D.![]() ![]() |
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