已知空间向量
,
,
,
,
.
(1)求x,y,z;
(2)求
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c58d64802b6e7e85a428d99f96f274f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7346d4455007850af4733cb8cd6fc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05152dd870a70ffb637dfb3ea693206e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03481e6a73207be03fdbc1f8e9965b37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cc523bdaf222089feb5befd43753ed7.png)
(1)求x,y,z;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec87721e0e075cb63667602cb00ad8a.png)
22-23高二上·湖南郴州·期末 查看更多[2]
湖南省郴州市2022-2023学年高二上学期期末教学质量监测数学试题(已下线)第一章 空间向量与立体几何(单元基础卷)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)
更新时间:2023-02-14 21:45:44
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【推荐1】设O为坐标原点,
.
(1)求
;
(2)若点P为直线OC上一动点,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28888c465339fd81a7661274281b3c3a.png)
(1)求
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(2)若点P为直线OC上一动点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59880e470359d8e9faf6ae5ce155cf2a.png)
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【推荐2】已知空间三点
(1)求以向量
为一组邻边的平行四边形的面积
;
(2)若向量
分别与向量
垂直,且
,求向量
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4296e795c6e2250c1a8519feb810b5.png)
(1)求以向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6198cd97e3a2d651277a9468860f4e54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6198cd97e3a2d651277a9468860f4e54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f405f74bc725bbeadf421726891d4d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
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【推荐1】已知向量
,
.
(1)当
与
平行时,求实数
的值;
(2)当
与
垂直时,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e53ecd812a19f3c4061299116901e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0f77a2cc6cb2e7876bf92cb590b849.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d489c43eb011491d16393bfba6774c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b57d4b52fc04039f5a5f8c9c6163748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/877cb99be948fc1f0b0937569aa099fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56c08c1d025f7f40129fe19536bcd422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1100379a4385b9ce064847bc21760adc.png)
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【推荐2】已知空间三点
.
(1)求以
为邻边的平行四边形的周长和面积;
(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab57dc75393d9df0860efd60be49398c.png)
(1)求以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995f23fe500e667589ac82b8517c7c7b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ede6d4cab1b862182775e405968ecdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6198cd97e3a2d651277a9468860f4e54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
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解题方法
【推荐1】如图,直三棱柱
中,
,
,E是BC中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/4ff79375-4ee6-4d3c-9a82-424728b8092a.png?resizew=149)
(1)若棱
上存在一点M,满足
,求AM的长;
(2)求直线BC与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90e17995e2f71e297d94ae51c7e5b1f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/4ff79375-4ee6-4d3c-9a82-424728b8092a.png?resizew=149)
(1)若棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c904f240a519d7e1dbd6bb69ae4655a2.png)
(2)求直线BC与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db3ef97d64e58d311019b70fe5e2cc0d.png)
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【推荐2】如图,已知四棱柱ABCD-A1B1C1D1,AA1⊥平面ABCD,四边形ABCD是正方形,点E在线段A1D上,且A1E=2ED.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/bcee8153-0916-4138-9574-cfc41ffbca22.png?resizew=219)
(1)证明:BD1⊥AC;
(2)证明:BD1∥平面ACE.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/bcee8153-0916-4138-9574-cfc41ffbca22.png?resizew=219)
(1)证明:BD1⊥AC;
(2)证明:BD1∥平面ACE.
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【推荐3】如图,在三棱柱
中,
,
,侧面
是正方形,
是
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/15/055e7499-6e48-4571-a93e-39b412e7ac20.png?resizew=203)
(1)求证:
;
(2)
是线段
上的点,且满足
.求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4307209e1e5cad88fc1b8163858688ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a93d5b1395e1156f5505f9c47120781.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/15/055e7499-6e48-4571-a93e-39b412e7ac20.png?resizew=203)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4251a66932fb8f300c28a408f0d3b0e9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681513fae0c62d4f495c2a7002062107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11e127cd038790fb5e008e72876ee1e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261790c66cc71ee3898afabad0c09f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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【推荐1】直三棱柱
中,
,棱
,
是
的中点.
(1)求
的长;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/935533f4327e24fe61eb8c86a384457e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80553f0a7022a98c0cddc838e6b3c8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a696a182fff038a86b2bbe8ca099442.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f847a413b630a37a33b071c6c32ef126.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f3c987622327e6e589f3d75d9691a87.png)
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【推荐2】在正四棱柱
中,
,
,
在线段
上,且
.建立如图所示的空间直角坐标系
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/b93eaf0d-e85f-4c37-938a-bf90ecb9b1dc.png?resizew=134)
(1)求
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f92d8e0c3c68eecfdfad9fa8381adc4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c76ee17afa983fa795545b5568b80089.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/b93eaf0d-e85f-4c37-938a-bf90ecb9b1dc.png?resizew=134)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af3e5c5e7d8e581b6b26d8d2eb597e1f.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce1b066f8869d0ff4513f7a99745125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152cfd5011c94e02c1a9cbbd4d8f58bb.png)
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