名校
1 . 如图所示,四棱锥
中,
底面ABCD,底面ABCD是边长为2的正方形,
,E是棱PB的中点,M是棱PC上的动点,当直线PA与直线EM所成的角为
时,那么线段PM的长度是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77dca0e33db66ed5fcb6e5f797b99f8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f9651b17b98d75a87a7e502202d32e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe8dc472dade6cea6943164792ab532.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/31c29760-1b1f-40df-860e-4041f7649dbf.png?resizew=145)
您最近一年使用:0次
2019-03-13更新
|
600次组卷
|
4卷引用:专题8.6 立体几何中的向量方法-2021年高考数学(理)一轮复习-题型全归纳与高效训练突破
(已下线)专题8.6 立体几何中的向量方法-2021年高考数学(理)一轮复习-题型全归纳与高效训练突破【区级联考】北京市东城区2018-2019学年高二上学期期末检测数学试题北京市一七一中学2019-2020学年高二第一学期月考(12月)数学试卷北京市第一七一中学2021-2022学年高二上学期第一次月考数学试题
2 . 在四棱锥
中,
平面
,四边形
是直角梯形,
,
,
,
,
,
,设
为棱
上一点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/dbbc13d7-8845-4272-9705-9ac0d9b4e524.png?resizew=162)
(1)求证:当
时,
;
(2)试确定
的值使得二面角
为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0e5697eca3f5205cb7b343648240bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d31600cba2d5256c7e78b6122d6755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a69df64811eb0866c84207f24dfae99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bec03e804f0cea1db5cde2aa185056a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f144992e1cbee34868abce1e5ad38c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13d28cb7181257cf732af4b615fc47d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b0f3113c3f27977a094b87b24fe042.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/dbbc13d7-8845-4272-9705-9ac0d9b4e524.png?resizew=162)
(1)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8efdff29ef3cdf577b3d69b0e7a31f1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760d5434e6c8bf40ea411cb2009fd752.png)
(2)试确定
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32bff9fff7a158e95a7f5041629e7a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
您最近一年使用:0次
3 . 已知正三棱柱
的所有棱长都相等,M为
的中点,N为
的中点,则直线CM与AN所成的角的余弦值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede6a60cad0e0b58e1549fda6e085719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bebb9d0950db392cbe960641f648df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c5b6dfff10cb3dc3e06509db56d7b9d.png)
您最近一年使用:0次
名校
4 . 在正方体
中,
分别为
,
的中点,
为侧面
的中心,则异面直线
与
所成角的余弦值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd694ad3a4733c7c84aaa7946aeea4de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7490886e2807c7b8a4fa57d99c4dc3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa62b5a161c20430cb1dda9809247f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16dd27701a0a9849b58d39ae10623763.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59bc04f26df876c668c8a941a2a20ba6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-03-06更新
|
1279次组卷
|
11卷引用:第36讲 空间向量的应用-2021年新高考数学一轮专题复习(新高考专版)
(已下线)第36讲 空间向量的应用-2021年新高考数学一轮专题复习(新高考专版)陕西省安康市2019届高三下学期第二次教学质量联考理科数学试题【市级联考】吉林省白山市2018-2019学年高二上学期期末联考数学(理)试题湖北省孝感市2018-2019学年高二下学期4月期中联考数学(理)试题河北省石家庄市第二中学2019-2020学年高一下学期期末数学试题(已下线)1.4.3+运用立体几何中的向量方法解决距离与角度问题(重点练)-2020-2021学年高二数学十分钟同步课堂专练(人教A版选择性必修第一册)(已下线)3.4.3 运用立体几何中的向量方法解决距离与角度问题(重点练)-2020-2021学年高二数学(理)十分钟同步课堂专练(人教A版选修2-1)云南省曲靖市沾益县第四中学 2020-2021学年高二上学期期末数学(理)试题(已下线)第一章 空间向量与立体几何章末测试-2020-2021学年一隅三反系列之高二数学新教材选择性必修第一册(人教版A版)吉林省白城市通榆县毓才高级中学2022-2023学年高二上学期第一次月考数学试题海南省琼中黎族苗族自治县琼中中学2023-2024学年高二上学期10月月考数学试题
5 . 如图,在四棱锥
中,底面ABCD是直角梯形,
,
平面ABCD,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/0daace75-8b24-4727-934d-8abc1a9e8642.png?resizew=155)
证明:平面
平面PAC;
2
若
,求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78ff68c9dd2449c1714ca87b7188d35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4564baf209de77802d46cda82995c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dab8aacb7ddd4c8fac790d19a92689a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7fa3aea72ccc36948a4a90f7368f71.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/0daace75-8b24-4727-934d-8abc1a9e8642.png?resizew=155)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/666e154cbea71fa13440a81dbfa002c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070c43ac7c950e23d50200343cc604cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e4c78e871db537c7d2ff07cadf3f03.png)
您最近一年使用:0次
6 . 如图,在空间直角坐标系
中,已知正四棱锥
的高
,点
和
分别在
轴和
轴上,且
,点
是棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/8cb90ab1-c1ad-402e-a5c0-20e75e315857.png?resizew=244)
(1)求直线
与平面
所成角的正弦值;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07445aa3909818a3ef93bb01182f545f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbdb21011ea821b91d539cb763aac649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598ced81edb0ef99f0a81daf450a78ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/8cb90ab1-c1ad-402e-a5c0-20e75e315857.png?resizew=244)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b33b7213d99a817bff19bcf740a0697c.png)
您最近一年使用:0次
7 . 如图,四棱锥中
,底面
为直角梯形,
,
,平面
底面
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/ee2f56da-053f-48c4-a16a-90ec702ac2ff.png?resizew=129)
(Ⅰ)判断平面
与平面
是否垂直,并给出证明;
(Ⅱ)若
,
,
,求二面角
的余弦值.
![](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/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62974d34de3a12418d6b700420afd1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e839ac941e8bf536ff35a12e56c7a400.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/ee2f56da-053f-48c4-a16a-90ec702ac2ff.png?resizew=129)
(Ⅰ)判断平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18120a244d3a1f9c1688bf53eb2ad775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b33b7213d99a817bff19bcf740a0697c.png)
您最近一年使用:0次
8 . 如图,四棱锥
中,底面
是梯形,且
,
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/28aec6f9-8451-48c4-aa7f-03ab76319155.png?resizew=172)
(1)求证:平面
平面
;
(2)若
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f08faa7f1550cb3732de12b2be5fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5408641691fd27f6dd8cf0ab2043ad4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d88fe4da1619394c316e576bca740d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f6f35d200d52fd4603871d742cfa75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d19a6606573faa709497621e936076c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a14b9e6dfaf58b8159e4f2d3b9bd6645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/733dcb931c045202130a44bcbbd65fd3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/28aec6f9-8451-48c4-aa7f-03ab76319155.png?resizew=172)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10df640ea855ac9be70efa752652682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d99d09af3e03f22ba8078adadb33550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74b29afa7790e833e97faa44366f6662.png)
您最近一年使用:0次
2019-02-03更新
|
328次组卷
|
2卷引用:四川省宜宾市叙州区第二中学校2024届高三下学期开学考试数学(理)试题
9 . 如图,在四棱锥
中,
底面
,
,
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/b7a61586-c415-4115-8707-95df97a3c98a.png?resizew=239)
(1)求证:
平面
;
(2)若点
在线段
上,且满足
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1cb23cb7d9f22cfc31a6cd6fcb12e13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc532cfe64300cb3da9e04a307c957a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26eba7e649fade39fd2d0b6ef4ac5ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/b7a61586-c415-4115-8707-95df97a3c98a.png?resizew=239)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e8c1551d814f36aa6773ff5986c800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d246f9eceab371ebf47a47c2f11a4ad.png)
您最近一年使用:0次
10 . 如图所示,在四棱锥
中,底面
为菱形,
底面
,点
是
上的一个动点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/7168efdb-d22c-4434-8d9d-3b04c69b7fef.png?resizew=184)
(1)当
时,求证:
;
(2)当
平面
时,求二面角
的余弦值.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829f9180ddd9aa1a0ee0dc520f4e0b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7a42341edbc0b01ab0769c4c02c3e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/7168efdb-d22c-4434-8d9d-3b04c69b7fef.png?resizew=184)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f586ec271c8ba58611b4bb160ae1017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/789c9c79846abc6ba99cf3e575cdae6f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083b08552886374380117e5146525855.png)
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