名校
1 . 在三棱锥
中,
,
平面
,点M是棱
上的动点,点N是棱
上的动点,且
.
![](https://img.xkw.com/dksih/QBM/2024/1/30/3422378703052800/3432026374717440/STEM/d16a09eff99f4f52b2501b3b39b7caac.png?resizew=200)
(1)当
时,求证:
;
(2)当
的长最小时,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74375e1ba9d3a5d373479874b6634e96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc281ca213b922e5c4bddafd4ef08df.png)
![](https://img.xkw.com/dksih/QBM/2024/1/30/3422378703052800/3432026374717440/STEM/d16a09eff99f4f52b2501b3b39b7caac.png?resizew=200)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d94188fea61c347a150744709920d96e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66fae8e33cd86fa8dab72704eaafe1ba.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1885efcff0b903e314057dd153578600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70db40c42655327adee01caedfc9d50c.png)
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2024-03-12更新
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6卷引用:浙江省温州市瑞安中学2022-2023学年高二下学期期中数学试题
名校
解题方法
2 . 已知棱长为1的正方体
中,
为正方体内及表面上一点,且
,其中
,
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf725e3d44c1b473c0e748ac2f45f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3c482b1fc72806cc615656c13d4c0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf42132e936df48d74f0118cd329c9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cea823cc67887e8f2f8db766d2072fe.png)
A.当![]() ![]() ![]() ![]() |
B.当![]() ![]() |
C.存在![]() ![]() ![]() ![]() |
D.当![]() ![]() ![]() |
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2卷引用:浙江省绍兴市第一中学2023-2024学年高二上学期期中数学试题
名校
解题方法
3 . 在如图所示的试验装置中,两个正方形框架ABCD,ABEF的边长都是1,且它们所在的平面互相垂直.活动弹子M,N分别在正方形对角线AC和BF上移动,且CM和BN的长度保持相等,记![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df3b8077a12c488a31a90d4cfcd6456f.png)
.
(2)当MN的长最小时,求平面MNA与平面MNB夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df3b8077a12c488a31a90d4cfcd6456f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59ede160d6012988cec688d057c55168.png)
(2)当MN的长最小时,求平面MNA与平面MNB夹角的余弦值.
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2023-09-29更新
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3卷引用:浙江省绍兴市第一中学2023-2024学年高二上学期期中数学试题
名校
4 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cc193f1d27c0cd5cb2ad1791e7d0a2c.png)
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b97ab3b66712c79b788f21ec005e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cc193f1d27c0cd5cb2ad1791e7d0a2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a47fb9a23ccaa593913a324ca146e0a.png)
A.![]() | B.3 | C.![]() | D.4 |
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4卷引用:浙江省温州市环大罗山联盟2022-2023学年高二上学期期中联考数学试题
5 . 如图,四棱锥
的底面
为直角梯形,平面
平面
,
,
,
,
,
.
(1)若三棱锥
的外接球的球心恰为
中点,求
与平面
所成角的正弦值;
(2)求四棱锥
体积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17bc77b37986d658edad69992c5ea0c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19fc9f894312e55c87a0d6737080e233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4994abbead410afe78b1d4e9858aaba.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/28/43afedc7-0414-4fc6-b556-4bdbd81e78b8.png?resizew=127)
(1)若三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
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4卷引用:浙江省台州市名校联盟2022-2023学年高二上学期11月五科联赛数学试题
浙江省台州市名校联盟2022-2023学年高二上学期11月五科联赛数学试题(已下线)模块三 专题1 利用空间向量求解探究性问题和最值问题(已下线)专题01 空间向量与立体几何(5)重庆市2024届高三上学期9月月度质量检测数学试题
名校
解题方法
6 . 如图,在四棱锥
中,底面
是矩形,
,
为棱
的中点,且
,
,若点
到平面
的距离为
,则实数
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/22/1cc41e90-2f55-4264-b016-d6f612fd30e7.png?resizew=220)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f72900e99805cc33b49290b34fdea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9390f734e0eb24703626e0e64ca01a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcad378f29b009ac31eccef748dbe053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba663f2a7503496dcd571b89005f9dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21665d21bbfb04410c78345de1fd15ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/137f98c6367086cc159aaa5f2e45ee7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13c62e7c58606b2250c6d189d85a6ea8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/22/1cc41e90-2f55-4264-b016-d6f612fd30e7.png?resizew=220)
A.![]() | B.![]() | C.![]() | D.![]() |
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7卷引用:浙江省宁波市北仑中学2022-2023学年高二上学期期中数学试题(2-10班+外高班使用)
浙江省宁波市北仑中学2022-2023学年高二上学期期中数学试题(2-10班+外高班使用)安徽省皖北县中联盟2022-2023学年高二上学期10月联考数学试题湖北省恩施州巴东县第三高级中学2022-2023学年高二上学期第三次月考数学试题3.4向量在立体几何中的应用 测试卷-2022-2023学年高二上学期数学北师大版(2019)选择性必修第一册(已下线)模块三 专题4 空间向量的应用2 空间的距离 B能力卷(已下线)模块三 专题6 空间的距离 B能力卷 (人教B)(已下线)湖南省邵阳市邵东创新实验学校2023-2024学年高二上学期期中数学试题
7 . 如图,在正方体
中,若
是正方形
及其内部的一个动点,且满足
,则动点
的轨迹是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/11/d0a22d99-11e4-4822-918c-4ecc2c00ecd8.png?resizew=157)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dc9bdab677ae1cae0d3e9d01d676873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/11/d0a22d99-11e4-4822-918c-4ecc2c00ecd8.png?resizew=157)
A.线段 | B.圆弧 |
C.椭圆的一部分 | D.抛物线的一部分 |
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8 . 如图,已知矩形
中,
,
,其中
为
的中点,将矩形
沿
折成二面角
,且有
.
![](https://img.xkw.com/dksih/QBM/2021/12/18/2875106101248000/2878894919491584/STEM/074e3966-6563-418f-803a-8f03fc829f18.png?resizew=292)
(1)若点
为
的中点,求证
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec91947bd89dda4ca9f74abdb1bd9ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd617e3e225274dccaefee325073ae0d.png)
![](https://img.xkw.com/dksih/QBM/2021/12/18/2875106101248000/2878894919491584/STEM/074e3966-6563-418f-803a-8f03fc829f18.png?resizew=292)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c597ff77c65c5add6f50294e3eee9536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d3c1df7fcce1d25c44a06a9f168fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2331bccb6ebf5b9fd639df994f575a9.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f59727be34cd56e46ede26aa3c0cf1.png)
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名校
9 . 我们知道平面直角坐标系内直线的一般式方程为
,对此进行类比,可知空间直角坐标系内平面的一般方程为
;运用上述知识,已知实数
,
,
满足
,则
的最小值是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f01fa45cefa203889bab7f3b68c60b02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a83e5d490ea07656d457fb3d81d4e82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794361beee8b56d9bf49d8d6a0990811.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97502047959344e89522d31c05deff35.png)
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10 . 点M是棱长为3的正方体
中棱AB的中点,
,动点P在正方形
(包括边界)内运动,且
面DMN,则PC的长度范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42b5834e9e85e58386be39d12debc666.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eadda575683996d79f41fc6538476e35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16194e947c87676431147b8f7bf477b8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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|
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8卷引用:浙江省台州市书生中学2021-2022学年高二上学期10月月考数学试题
浙江省台州市书生中学2021-2022学年高二上学期10月月考数学试题陕西省渭南高级中学2020-2021学年高二上学期期中理科数学试题江西省赣州市教育发展联盟2021-2022学年高二上学期第7次联考高二数学(理)试题北京市首都师范大学附属密云中学2022-2023学年高二上学期阶段性练习数学试题(已下线)模块二 专题3 利用空间向量解决立体几何中复杂问题 期末终极研习室(高二人教A版)(已下线)3.4.2 求距离(六大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)(已下线)考点16 空间向量与立体几何-2022年高考数学一轮复习小题多维练(新高考版)(已下线)解密12 空间向量在空间几何体中应用(分层训练)-【高频考点解密】2022年高考数学二轮复习讲义+分层训练(新高考专用)