名校
解题方法
1 . 已知向量
的夹角为
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f785147690f83dcee0a0bc6c327e75a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4764549f863245cbd25a3928a316c466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0e72407106ad05a1544c02c24ce1a5a.png)
A.49 | B.7 | C.![]() | D.![]() |
您最近一年使用:0次
2022-04-01更新
|
1053次组卷
|
7卷引用:云南省寻甸一中、昆明西联学校阳宗海学校2021-2022学年高一下学期期中联考数学试题
名校
解题方法
2 . 已知
,
为单位向量,若
,则
,
的夹角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a54bd9d658e27bce8e3ad9fbb0c667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-03-29更新
|
1063次组卷
|
3卷引用:云南省昆明市2022届高三”三诊一模“复习教学质量检测数学(理)试题
名校
3 . 已知向量
,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eb506d2dc93b91a800f049fde9a6e4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd2555bb24d9abc9551b1de8deffea3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6d343208f0f5e3aab71004c245dabe.png)
A.5 | B.6 | C.![]() | D.![]() |
您最近一年使用:0次
2022-03-26更新
|
660次组卷
|
4卷引用:云南省楚雄实验中学2023届高三上学期12月月考数学试题
解题方法
4 . 若
,
,则
与
夹角的余弦值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b43f2ee9917143fa40a0d5d56cb639e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ee1475d17d4aa2e2131975e99feb8ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
您最近一年使用:0次
2022-03-22更新
|
854次组卷
|
3卷引用:云南省2022届高三“3+3+3”高考备考诊断性联考(二)数学(理)试题
云南省2022届高三“3+3+3”高考备考诊断性联考(二)数学(理)试题西南名校联盟2022届“3+3+3”高考备考诊断性联考卷(二)理科数学试题(已下线)查补易混易错点05 平面向量-【查漏补缺】2022年高考数学(理)三轮冲刺过关
名校
解题方法
5 . 设单位向量
满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0008851498d5db50fdff68246c032e2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fece1a97b31498ee460acaa8bd098fe7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-03-17更新
|
718次组卷
|
3卷引用:云南省昭通一中等三校2022届高三下学期高考备考实用性联考(四)数学(文)试题
6 . 已知非零向量
,
满足
,且
,则
与
的夹角为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/138653ffb9a728c245170e9ba1d535d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a4dfa8a26b87e5c32ff9f653cccbdc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-03-01更新
|
2413次组卷
|
7卷引用:云南省昭通市永善、绥江县2021-2022学年高二3月月考数学试题
名校
解题方法
7 . 已知
,
为单位向量,且
在
方向上的投影为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f233803ccc487b243f31ae3b2846d60.png)
______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f233803ccc487b243f31ae3b2846d60.png)
您最近一年使用:0次
2022-03-01更新
|
1765次组卷
|
5卷引用:云南省师范大学附属中学2022届高三高考适应性月考卷(七)数学(文)试题
解题方法
8 . 已知向量
,
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa69bc84faa75f6ff3769694908b578.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd18461fd9d77e6fa46a654f0ab540f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c250094127e2b3c878d68213b60407.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
9 . 已知向量
,
,则下列向量与向量
垂直的有___________ .(只填正确的序号)
①
;②
;③
;④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7605402b78577eb6fa5b59767e158fc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df4f36f5a27bba1aadeba4f586827391.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f405f5120774ca494da286553b62df3a.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d2ff9ced79c22ff48de8357b806412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13865d1da2422e9ed8266663de2d40a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82dab5b50b2ba09b384a3ee2a8860263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a0d2db1f751e8944ae71fc31853629.png)
您最近一年使用:0次
名校
10 . 若向量
,
,
,
与
的夹角为60°,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa99e67a604aadb2d528214738b49708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9606a290f97902ee8c60813120edd00a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a30cd0cb8510e8468b6781344940357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
A.16 | B.4 | C.7 | D.![]() |
您最近一年使用:0次
2022-04-10更新
|
274次组卷
|
4卷引用:云南省巍山彝族回族自治县第二中学2021-2022学年高二上学期第四次月考(期末)数学试题