名校
解题方法
1 . 如图,在斜三棱柱
中,向量
,三个向量之间的夹角均为
,点
、
分别在
、
上,且
,
,
,
,
.
(1)将向量
用向量
、
表示,并求
;
(2)将向量
用
、
、
表示.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a60f5d069760bfe69f9cdc1b6e1e048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75afb466c84b9c3ec8538b25f36858a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2fca361c4554871467b2b30419620df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7d857811cbd619f868d951aa7a0ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9acdc54f3772d8bad34f186111abd214.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432a8c9db3b33f92451c601216558b90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b2b622913dfd7d0c099db3bdfed61d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efd738a9c0d92e69b26a7a8b40ae668e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d24f94116e38ad5fac9174f3adae4eb4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/24/7dc67978-b5c1-41dd-849d-b0c0c7705855.png?resizew=140)
(1)将向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe6d728b430549f00bb9c0a7bf8bf7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5813dd9f2bd01a38d749247eccca5449.png)
(2)将向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75578eb4a8555e6cfb6d743a509a612f.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/d366d8fbb7258ee051f49977441e14a2.png)
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2023-01-21更新
|
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4卷引用:新疆乌鲁木齐市第101中学2022-2023学年高二下学期开学考试数学试题
新疆乌鲁木齐市第101中学2022-2023学年高二下学期开学考试数学试题(已下线)模块三 专题2 空间向量的基本定理 B能力卷(已下线)模块三 专题2 空间向量的基本定理 B能力卷 (人教B)安徽省肥东凯悦中学2021-2022学年高二上学期第一次自主检测数学试题
名校
2 . 下列式子中,一定正确的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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4卷引用:新疆昌吉市第一中学2022-2023学年高一下学期5月月考数学试题
解题方法
3 . 已知向量
与
的夹角为120°,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31efdb77e351b6737346f9c360373cf4.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/cd18461fd9d77e6fa46a654f0ab540f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/082c6926889f84f438ea35f70bf05f02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31efdb77e351b6737346f9c360373cf4.png)
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2021-10-19更新
|
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2卷引用:新疆乌鲁木齐市第三十六中学2022-2023学年高一下学期期中考试数学试题
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4 . 已知向量
,
的夹角为
,
,
,则
( )
![](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/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd18461fd9d77e6fa46a654f0ab540f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950c9d93031dc3a2b118e0385a938c7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc5cf2950501b75769ee9b711e663fb3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 已知
,
,
与
的夹角为60°,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07ade74ecbaea95f784397117bb49f0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098b7c4196046343ade61bb22446d962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a05f3b24405813378a20ee77c987ee6.png)
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2020-02-02更新
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5卷引用:新疆兵团第三师图木舒克市鸿德实验学校2022-2023学年高一下学期期中考试数学试题
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6 . 对于任意向量
,
,定义新运算“
”:
(其中
为
与
的夹角).利用这个新运算解决:若
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5551fb0492bc25596cabb007fe565389.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/36e16415b61722f9961e412386e6819f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ba0ae7708c17219b9fc2342ac2899ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.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/4b9620b76a31e8cfef0cd6a2bdb10ffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9606a290f97902ee8c60813120edd00a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a72d76fbbd1afa09aa65e149c195f32f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5551fb0492bc25596cabb007fe565389.png)
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解题方法
7 . 已知向量
与
的夹角为
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e912b86e064e678ab34210f3fa02ef.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/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69522947c998dc6865c483eb0321d649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e912b86e064e678ab34210f3fa02ef.png)
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2020-03-05更新
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4卷引用:新疆英吉沙县实验中学2024届高三上学期期中考试复习数学试题(一)
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.![]() |
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解题方法
9 . 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
10 . 在
中,角A,B,C的对边分别为a,b,c,且满足
.
(1)求角B的大小;
(2)若
,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/174811b9fdb59ab758b40696d289edcf.png)
(1)求角B的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af039cad52ca4e1f1e322277bc81afd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2020-06-15更新
|
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