1 . 已知空间向量
,
,且
,那么实数
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ddd53a44feeb775593aef4a3bbdd01e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a841ebe85d65277b2eefe9a249d2a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d76ee2e81f447f84a3e0b39c0388ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
A.![]() | B.6 | C.![]() | D.15 |
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解题方法
2 . 如图,直四棱柱
中,底面
是菱形,
,设
,若
,
(1)求
的长;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23f01af749100e1888bba06268843db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92105835f8075cb75dff244e908370b5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/795c4fba-4a6a-446f-ac2f-8e47f5934e40.png?resizew=155)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d19dcb816db7cc00a3e2e060e85822d.png)
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2023-11-09更新
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4卷引用:辽宁省县级重点高中协作体2023-2024学年高二上学期期中考试数学试题
3 . 如图,长方体
中,
,
,点P为线段
上一点,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55dfaf9472aa24ab8bc1072a91760827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd03a79b08fac84501768b34cfe3357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09dc44f32a06762871bd4f5f97129995.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/302593f4-7cce-42e4-8129-0fba6b285e82.png?resizew=129)
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2卷引用:辽宁省县级重点高中协作体2023-2024学年高二上学期期中考试数学试题
4 . 在四面体P-ABC中,下列说法正确的是( )
A.若![]() ![]() |
B.若Q为![]() ![]() |
C.若![]() ![]() ![]() |
D.若四面体P-ABC的棱长都为a,点M,N分别为PA,BC的中点,则![]() |
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5 . 已知三棱锥
的棱
、
、
两两垂直,
,
,
为
的中点,
在棱
上,且
平面
,则下列说法错误的是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bae7599ad243c12d94325ad917f0a44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81fa367ec317fe2a30142e1c30cce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37793a3a810e823e10c340986f55ddd.png)
A.![]() |
B.![]() ![]() ![]() |
C.三棱锥![]() ![]() |
D.点![]() ![]() ![]() |
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6 . (1)求与向量
共线,且满足
的向量
的坐标;
(2)已知点
,若空间中一点
使得
,求点
的坐标;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff62fa204244ba460b3039ec6145c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e8b496cef52bf3f5fc586b7785ed00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45de2c7473ccc55b30490511228eba49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61a2e651bbd300ff4f8caff2901c459b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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2卷引用:辽宁省沈阳市重点高中联合体2023-2024学年高二上学期期中考试数学试题
7 . 在空间直角坐标系中,已知点
,若四边形
为平行四边形,则
的值分别为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/396a9f993299ff7ac9684ec7d775e06e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520f8abda6a85e7ef6f281fc2df853fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
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8 . 已知动点
在正方体
的对角线
(不含端点)上.设
,若
为钝角,则实数
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74aa1320e5020d0ceed159ab933c4df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3c1375c64dceef45846308a418cf7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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4卷引用:辽宁省实验中学2023-2024学年高三上学期期中数学试题
辽宁省实验中学2023-2024学年高三上学期期中数学试题重庆市云阳县云阳高级中学校2023-2024学年高二上学期第二次月考数学试题(已下线)考点14 立体几何中的动态问题 2024届高考数学考点总动员【练】(已下线)专题01 空间向量与立体几何(1)
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解题方法
9 . 已知空间中三点
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbc25c940e030e72b1d274d18be8ed53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca954c06dc3accf34a3ef8225d89bcd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a66d3f5c55434c36d796edec9e6ad1.png)
A.向量![]() ![]() |
B.平面ABC的一个法向量为![]() |
C.![]() ![]() ![]() |
D.点A到直线BC的距离为![]() |
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2卷引用:辽宁省沈阳市翔宇中学2023-2024学年高二上学期第一次月考数学试题
10 . 在长方体
中,
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0808759e8ffe270e6ff0a133591415b8.png)
A.![]() | B.![]() | C.3 | D.9 |
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2卷引用:辽宁省辽东教学共同体2023-2024学年高二上学期10月联考数学试题