名校
解题方法
1 . 设
,
是互不重合的平面,
,
,
是互不重合的直线,下列命题中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.若![]() ![]() ![]() ![]() | B.若![]() ![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() | D.若![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2022-08-04更新
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1552次组卷
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6卷引用:黑龙江省哈尔滨市德强学校2022-2023学年高二上学期开学摸底考试数学试题
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2 . 在如图所示的几何体中,
、
、
都是等腰直角三角形,AB=AE=DE=DC,且平面ABE⊥平面BCE,平面DCE⊥平面BCE.
![](https://img.xkw.com/dksih/QBM/2022/7/22/3028199233380352/3029531670487040/STEM/34b0706b40a5425fbc5357e6baeb0420.png?resizew=192)
(1)求证:
平面BCE;
(2)求直线AB与平面EAD所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://img.xkw.com/dksih/QBM/2022/7/22/3028199233380352/3029531670487040/STEM/34b0706b40a5425fbc5357e6baeb0420.png?resizew=192)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df6a3413b77478c8d4e1e0389dbf5984.png)
(2)求直线AB与平面EAD所成角的正弦值.
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2022-07-24更新
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2卷引用:黑龙江省哈尔滨市第六中学校2021-2022学年高一下学期期末数学试题
2022高二·全国·专题练习
名校
3 . 如图,圆台的高为4,上、下底面半径分别为3、5,M、N分别在上、下底面圆周上,且
,则|
|等于( )
![](https://img.xkw.com/dksih/QBM/2022/7/21/3027593054560256/3028267616346112/STEM/a290954026eb4d0aabbbe7a70dfd56e5.png?resizew=111)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d62b5360ba7ce53d113fa13aec39058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd4b9ad667f6da79bc3a5737cbc1eee.png)
![](https://img.xkw.com/dksih/QBM/2022/7/21/3027593054560256/3028267616346112/STEM/a290954026eb4d0aabbbe7a70dfd56e5.png?resizew=111)
A.![]() | B.5![]() | C.![]() | D.5 |
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2022-07-22更新
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8卷引用:黑龙江省大庆铁人中学2023-2024学年高二上学期期中考试数学试题
黑龙江省大庆铁人中学2023-2024学年高二上学期期中考试数学试题(已下线)专题1.3 空间向量的数量积运算-重难点题型精讲第一章 空间向量与立体几何(B卷·能力提升练)-【单元测试】2022-2023学年高二数学分层训练AB卷(人教B版2019)辽宁省渤海大学附属高级中学2022-2023学年高二上学期第一次月考数学试题辽宁省沈阳市第三十一中学2022-2023学年高二上学期12月月考数学试卷河南省洛阳市第一高级中学2023-2024学年高二上学期期中达标数学测评卷(B卷)福建省永春华侨中学2023-2024学年高二上学期期中考试数学试题福建省福州第一中学2023-2024学年高二上学期第一学段(期中)考试数学试题
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4 . 四棱锥
平面
,底面
为直角梯形,
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/1/e289126e-cb58-424d-8508-2a4fd15611da.png?resizew=196)
(1)求证:
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)
是棱
上的点,若二面角
的正弦值为
,确定点
的位置.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6751206a2b2b981643c184854295851b.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/58cd03ac3694291568e4bffdbb63a8cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e415b9f4c4ab76d9cdc61418b953cb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/1/e289126e-cb58-424d-8508-2a4fd15611da.png?resizew=196)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7175df06e33cad4e6bbc3f2f6b0a2986.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)
![](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/e55acf08a1fe8bea7a4822d8718dbc09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
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5 . 如图,在四棱柱
中,
,
,底面ABCD是菱形,
,平面
平面ABCD,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/14d211d0-f2fe-4b00-bd26-f99955624cd3.png?resizew=250)
(1)证明:
平面ABCD;
(2)若M是线段
的中点,求二面角
的余弦值.
![](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/7bb8fb552b9e21dbaba74d11aa747790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70c3527620adb4fdabefa3ac6201ccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3185a3ae0e69ba7d6c72dd00101c69f8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/14d211d0-f2fe-4b00-bd26-f99955624cd3.png?resizew=250)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a67521824abc07e3755db95d8f19621.png)
(2)若M是线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ddb9e732672e83605974d800efa788f.png)
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名校
解题方法
6 . 如图,在四棱锥
中,
,
,底面
是菱形,
是
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/31/76e3c7b0-ff0a-4ac7-b235-3c8f8d363bc7.png?resizew=265)
(1)证明:平面
平面
;
(2)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/0e5638a965808dbcfa7721f7d3ecf02b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3755b2bcf7516eedb26a27ad73657216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/31/76e3c7b0-ff0a-4ac7-b235-3c8f8d363bc7.png?resizew=265)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a44cd09d9ad46264de4620c60370d49d.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
您最近一年使用:0次
2022-07-20更新
|
987次组卷
|
2卷引用:黑龙江省大庆市大庆中学2021-2022学年高二下学期期末考试数学试题
解题方法
7 . 如图,在四棱锥
中,
底面
,
,
,
,
,
为棱
的中点,
是线段
上一动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/22/98c2e9ef-ab58-4ad5-a4ed-33e79f082fb9.png?resizew=192)
(1)求证:平面
平面
;
(2)若直线
与平面
所成角的正弦值为
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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5acb763021bf166ca719d07223591d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81981fd7b343f4fe2db8f36eb66c1ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/22/98c2e9ef-ab58-4ad5-a4ed-33e79f082fb9.png?resizew=192)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c8c4c971eeab98c4108d6eecabac15.png)
您最近一年使用:0次
2022-07-15更新
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1191次组卷
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4卷引用:黑龙江省鸡西市虎林市高级中学2022-2023学年高二上学期9月月考数学试题
8 . 如图,已知正方体ABCD-A1B1C1D1的中心为O,则下列结论中
![](https://img.xkw.com/dksih/QBM/2022/7/12/3020929735180288/3021564578832384/STEM/3a2270953b134512883780dbde7ac389.png?resizew=152)
①
+
与
1+
1是一对相反向量;
②
-
1与
-
1是一对相反向量;
③
1+
1+
1+
1与
+
+
+
是一对相反向量;
④
-
与
1-
1是一对相反向量.
正确结论的个数为( )
![](https://img.xkw.com/dksih/QBM/2022/7/12/3020929735180288/3021564578832384/STEM/3a2270953b134512883780dbde7ac389.png?resizew=152)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0762365cf0afd8d6966d7d3407e2ade0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0762365cf0afd8d6966d7d3407e2ade0.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68628a408537b1cf3bf1ca2a69731b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ec3efaa6b6ff5769e8999df5714a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ec3efaa6b6ff5769e8999df5714a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68628a408537b1cf3bf1ca2a69731b6.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68628a408537b1cf3bf1ca2a69731b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ec3efaa6b6ff5769e8999df5714a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0762365cf0afd8d6966d7d3407e2ade0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0762365cf0afd8d6966d7d3407e2ade0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ec3efaa6b6ff5769e8999df5714a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68628a408537b1cf3bf1ca2a69731b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ec3efaa6b6ff5769e8999df5714a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ec3efaa6b6ff5769e8999df5714a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
正确结论的个数为( )
A.1 | B.2 | C.3 | D.4 |
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2022-07-13更新
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2238次组卷
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12卷引用:黑龙江哈尔滨第九中学校2022-2023学年高二上学期开学检测数学试题
黑龙江哈尔滨第九中学校2022-2023学年高二上学期开学检测数学试题广东省2023届高三上学期第一次联考数学试题广西桂林市023届高三上学期阶段性联合检测数学(理)试题广西桂林市2023届高三上学期阶段性联合检测数学(文)试题(已下线)第28练 空间向量的概念、运算与基本定理第一章 空间向量与立体几何单元测试(巅峰版)河南省濮阳市南乐县第一高级中学2022-2023学年高二上学期第一次月考数学试题(已下线)第06讲 空间向量及其线性运算4种常见考法归类-【暑假自学课】2023年新高二数学暑假精品课(人教A版2019选择性必修第一册)(已下线)1.1 空间向量及运算(精讲)-2023-2024学年高二数学《一隅三反》系列(人教A版2019选择性必修第一册)(已下线)1.1.1 空间向量及其线性运算【第三练】山西省临汾市洪洞县向明中学2023-2024学年高二上学期10月月考数学试题(A卷)(已下线)第1章 空间向量与立体几何单元测试基础卷-2023-2024学年高二上学期数学人教A版(2019)选择性必修第一册
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9 . 已知三棱锥
,
,
是边长为2的正三角形,E为
中点,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30fc65a72853bd8ac1ad0828270d3baf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bbf25292ff28709ea1511db9bdda525.png)
A.![]() | B.异面直线![]() ![]() ![]() |
C.![]() ![]() ![]() | D.三棱锥![]() ![]() |
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2022-07-10更新
|
1344次组卷
|
7卷引用:黑龙江省双鸭山市友谊县高级中学2022-2023学年高二上学期期末考试数学试题
名校
解题方法
10 . 如图,四棱锥P-ABCD中,底面ABCD是正方形,PD⊥平面ABCD,
,E、F分别是PC、AD中点.
![](https://img.xkw.com/dksih/QBM/2022/7/7/3017587502268416/3018367612116992/STEM/a7cc00d606ed439a85a676ecc54a5a95.png?resizew=175)
(1)求直线DE和PF夹角的余弦值;
(2)求点E到平面PBF的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99926bf272cd757f0985c69b390ebcce.png)
![](https://img.xkw.com/dksih/QBM/2022/7/7/3017587502268416/3018367612116992/STEM/a7cc00d606ed439a85a676ecc54a5a95.png?resizew=175)
(1)求直线DE和PF夹角的余弦值;
(2)求点E到平面PBF的距离.
您最近一年使用:0次
2022-07-08更新
|
1865次组卷
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