名校
解题方法
1 . 已知
,
与
的夹角为
,则
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/498634e4ed9d425d5e619aa45d4b5366.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/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec71cd8938a9585f3589ca6c514ea619.png)
您最近一年使用:0次
2023-08-12更新
|
770次组卷
|
5卷引用:新疆库车市第二中学2023-2024学年高二上学期开学考试数学试题
新疆库车市第二中学2023-2024学年高二上学期开学考试数学试题福建省泉州市三校(铭选中学、泉州九中、 侨光中学)2022-2023学年高一下学期期中联考数学试题四川省宜宾市叙州区第二中学校2023-2024学年高二上学期开学数学试题黑龙江省大庆市大庆中学2023-2024学年高二上学期开学考试数学试题(已下线)8.1.2向量数量积的运算律-同步精品课堂(人教B版2019必修第三册)
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2 . 如图,菱形
的边长为6,
,
,则
的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598b7f3a67936706680472cacea55619.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644295edd116d3f203fa632ab0a755e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3c21714a4b06449a38249c86f8cd1c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/11/bb6865fb-aab3-41eb-b227-3ce4059c2e14.png?resizew=201)
您最近一年使用:0次
2023-08-11更新
|
394次组卷
|
3卷引用:新疆石河子第一中学2023-2024学年高二上学期9月月考数学试题
解题方法
3 . 已知向量
,
的夹角为
,且
,
,求
.
![](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/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e310702748855c3edccd151aae0143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29835828933a77946076d813d773841a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7d8b42c85013ba07ba18e5e46d8716.png)
您最近一年使用:0次
2023-08-07更新
|
595次组卷
|
2卷引用:新疆乌鲁木齐市第六十一中学2022-2023学年高一下学期期中考试数学试题
解题方法
4 . 正
的边长为2,D为BC边的中点,则
的模等于_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/997d59c11b49eae73a46fccbee6b7cae.png)
您最近一年使用:0次
解题方法
5 . 已知向量
与
的夹角为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92095f3b8b3ca41b60fc2473f6ec7f35.png)
__________ .
![](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/0e3423c6fd3167eeb6bdf0a7bb4ada24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92095f3b8b3ca41b60fc2473f6ec7f35.png)
您最近一年使用:0次
2023-07-27更新
|
504次组卷
|
5卷引用:新疆阿拉山口市中学2023-2024学年高二上学期开学考试数学试题
名校
6 . 已知函数
,
图像上的每一点的横坐标缩短到原来的
,得到
的图像,
的部分图像如图所示,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9448bf1d6136b3a108e7ea60506ad39.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83865c7bba24b68055da8f5e35bf04ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/953942d88c9ddb534f2ac510fdfd2b0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9448bf1d6136b3a108e7ea60506ad39.png)
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2023-07-21更新
|
566次组卷
|
4卷引用:新疆维吾尔自治区乌鲁木齐市第八十中学2024届高三上学期11月月考数学试题
新疆维吾尔自治区乌鲁木齐市第八十中学2024届高三上学期11月月考数学试题上海师范大学附属中学2022-2023学年高一下学期期末数学试题(已下线)【人教A版(2019)】高一下学期期末模拟测试A卷(已下线)专题02 平面向量-《期末真题分类汇编》(上海专用)
名校
解题方法
7 . 已知
的三个角
的对边分别为
.
(1)求
;
(2)若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed9d6e9d4677eab72c35da219ad9376f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e408f82c366db50ff8a985dd6e44053d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-07-17更新
|
300次组卷
|
2卷引用:新疆维吾尔自治区喀什第二中学2023-2024学年高二上学期开学测试数学试题
解题方法
8 . 设
为单位向量,满足
,设
的夹角为
,则
的可能取值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10814bc3db929e79874befe96cf4e3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532234fe66f4dde75cbd82a94116e7de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3374f3d46b526fa68fdcbb9e5a99c706.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
9 . 已知
,
,且
与
的夹角为
.
(1)求
;
(2)求
与
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787379f7ff8d24be7eebfea1cfe956d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2396cac4b185cf1f1a67dad9248481c.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/a6c0927afc571a7c966c98192040979e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16111d1425b87ba82ea6a706d1dfb3ef.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ffa3e1ce447d158f6084a66841307a4.png)
您最近一年使用:0次
2023-06-15更新
|
350次组卷
|
3卷引用:新疆维吾尔自治区昌吉回族自治州呼图壁县第一中学2023-2024学年高二上学期期初模块测试数学试题
名校
10 . (1)已知单位向量
的夹角为60°,若
与
垂直,求
;
(2)已知向量
,若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e8b95a61af300412fc65f846089028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8d5d06c8ba359e2f95bd6abbeb9d696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)已知向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efeda68a5ce3f45832b6316fb1c32f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e082c6d40a9ffa780615a7492c6a1d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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