1 . 如图所示,在正方体
中,E是棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/5946c26f-b5f8-4fb4-96f8-4e92b172ace6.png?resizew=183)
(1)求直线
与平面
所成的大小;
(2)在棱
上是否存在一点F,使
平面
?证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/5946c26f-b5f8-4fb4-96f8-4e92b172ace6.png?resizew=183)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(2)在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1df970d8b2fcbb38bfac1dc33da9179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
您最近一年使用:0次
名校
2 . 如图,在三棱柱
中,侧面
为菱形,
为
的中点,
为等腰直角三角形,
,
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/1fb2883e-2c74-4026-84db-2ae5d32e86d6.png?resizew=193)
(1)证明:
平面
.
(2)求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.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/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13ba5383e768dc86e1bfd79c10f96f4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4357216fbd755327c16ef5cb9803b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2919a662cb6d59eac9aa5cdd69dac847.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/1fb2883e-2c74-4026-84db-2ae5d32e86d6.png?resizew=193)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
您最近一年使用:0次
2019-09-19更新
|
559次组卷
|
3卷引用:福建省厦门市第一中学2020届高三最后一模数学(理)试题
3 . 已知下图是四面体
及其三视图,
是
的中点,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/9a4a1c82-7818-41b4-afe7-329222729f55.png?resizew=409)
(1)求四面体
的体积;
(2)求
与平面
所成的角;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/9a4a1c82-7818-41b4-afe7-329222729f55.png?resizew=409)
(1)求四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2019-08-21更新
|
267次组卷
|
3卷引用:上海市复兴高级中学2019年5月高三模拟数学试题
4 . 如图,在三棱锥
中,
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/5c3a1366-c1b6-4bff-ad56-7e42b35b0318.jpg?resizew=141)
(1)证明:
平面
;
(2)若点
在棱
上,且
,求直线
与平面
所成角的大小.(结果用反三角表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4959250cb4f4289b7c5400c7bee0426.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e2e437445c2743a73be2d96cd1b1f2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/5c3a1366-c1b6-4bff-ad56-7e42b35b0318.jpg?resizew=141)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/591b212067c41306c657175abacf168a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
2019-11-09更新
|
287次组卷
|
3卷引用:2020届上海市高三下学期高考预测数学试题
2020届上海市高三下学期高考预测数学试题上海市建平中学2018-2019学年高三上学期12月月考数学试题(已下线)课时41 空间直线与平面的位置关系-2022年高考数学一轮复习小题多维练(上海专用)
5 . 如图,直三棱柱
中,
分别为
的中点.
![](https://img.xkw.com/dksih/QBM/2019/7/11/2244716688785408/2245255655915520/STEM/8bb00a01-ec53-4bbd-bba0-59c44e53e0d8.png)
(1)证明:
平面
;
(2)求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01afbdff592e2e269e1dbf751ab1ef5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfb9c088a7422e95f747701a626513d.png)
![](https://img.xkw.com/dksih/QBM/2019/7/11/2244716688785408/2245255655915520/STEM/8bb00a01-ec53-4bbd-bba0-59c44e53e0d8.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92bced6bf70db7229db85f2b10339431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
您最近一年使用:0次
2019-07-12更新
|
1127次组卷
|
4卷引用:西藏日喀则市2020届高三上学期学业水评测试(模拟)数学(理)试题
6 . 在五棱锥
中,
,
,
,
.
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/a0faed8e-eb2b-4154-ac5e-994be8f09951.png?resizew=162)
(1)求
与平面
所成角的大小
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be89b9d1709d7974a108142c5fa2ccec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ff02265fcccd967c2274e18f349abc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1647f87a03c23a6db1e89ea272e07714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4225465934b192802eb75bb50680724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/515b03f1a4f99d449a63249ae207487a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/a0faed8e-eb2b-4154-ac5e-994be8f09951.png?resizew=162)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37793a3a810e823e10c340986f55ddd.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37793a3a810e823e10c340986f55ddd.png)
您最近一年使用:0次
7 . 斜三棱柱ABC﹣A1B1C1,已知侧面BB1C1C与底面ABC垂直且∠BCA=90°,∠B1BC=60°,BC=BB1=2,若二面角A﹣B1B﹣C为30°
(1)求AB1与平面BB1C1C所成角的正切值;
(2)在平面AA1B1B内找一点P,使三棱锥P﹣BB1C为正三棱锥,并求P到平面BB1C距离.
(1)求AB1与平面BB1C1C所成角的正切值;
(2)在平面AA1B1B内找一点P,使三棱锥P﹣BB1C为正三棱锥,并求P到平面BB1C距离.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/89ccdfe0-4e80-4864-a93f-d81c2ff54ae9.png?resizew=172)
您最近一年使用:0次
8 . 如图,在四棱锥
中,
平面
,
,
,
,
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/0f36106f-9a03-401a-8282-ca2ec013fa52.png?resizew=157)
(1)求
和平面
所成的角的大小.
(2)求二面角
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/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf10d92f20501e19d25f6f4159aab89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace900749d0861aa51fcc6d72c51f82c.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/2022/12/11/0f36106f-9a03-401a-8282-ca2ec013fa52.png?resizew=157)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e867e5c7ef4da37d8985ce82022060e.png)
您最近一年使用:0次
2019-06-07更新
|
982次组卷
|
5卷引用:【市级联考】江西省鹰潭市2019届高三第一次模拟考试(理)数学
9 . 在棱长为
的正方体
,
是棱
的中点,
是侧面
的中心.
(1)求三棱锥
的体积;
(2)求
与底面
所成角的大小(结果可用反三角函数表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7253ffd3fc633d861810ee2e872188b6.png)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ad933da0d2d7a49ef29a7c20cf864b.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
您最近一年使用:0次
2020-01-13更新
|
218次组卷
|
3卷引用:2017年上海市建平中学高三三模数学试题
10 . 如图所示,圆O的直径AB=6,C为圆周上一点,BC=3,平面PAC垂直圆O所在平面,直线PC与圆O所在平面所成角为60°,PA⊥PC.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/c50add60-b34e-44e1-a18e-6088ee4a51e8.png?resizew=166)
(1)证明:AP⊥平面PBC
(2)求二面角P—AB一C的余弦值
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/c50add60-b34e-44e1-a18e-6088ee4a51e8.png?resizew=166)
(1)证明:AP⊥平面PBC
(2)求二面角P—AB一C的余弦值
您最近一年使用:0次