1 . 如图正方体
,
是
的中点,
是
的中点.
![](https://img.xkw.com/dksih/QBM/2021/4/8/2695446096289792/2808815173402624/STEM/70224d5c-211b-4d80-bf17-c038f0139250.png?resizew=228)
(1)求
与平面
所成角的大小;
(2)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://img.xkw.com/dksih/QBM/2021/4/8/2695446096289792/2808815173402624/STEM/70224d5c-211b-4d80-bf17-c038f0139250.png?resizew=228)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54305d2291b852672d933d5c91291209.png)
您最近一年使用:0次
2 . 图,在四棱锥
中,
面ABCD,
,
,
,
,N是PC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/fe399e8e-09e9-4fdd-a2bf-8c90b9ae6fa3.png?resizew=166)
(1)证明:
面PAB;
(2)求AN与面PND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/9f14fe22376f70a50752d3e146b8e1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c05bbc5dbc0cd9ba0414ee79f501db9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/fe399e8e-09e9-4fdd-a2bf-8c90b9ae6fa3.png?resizew=166)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b38bc08d7904222164fe46926abda3.png)
(2)求AN与面PND所成角的正弦值.
您最近一年使用:0次
3 . 如图所示,三棱台
中,
,
底面
,
.
![](https://img.xkw.com/dksih/QBM/2021/6/3/2734949510250496/2804224679845888/STEM/415e7035-c67a-4d12-957f-03762c552a07.png?resizew=275)
(1)证明:
;
(2)若
,
,问
为何值时,直线
与平面
所成的角为
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45378fbdfb5fe305c71893a91435854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed04b01505bbd8a4ac0bc12e46f23bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6034301fc4110da89bdb0f46ad82ab.png)
![](https://img.xkw.com/dksih/QBM/2021/6/3/2734949510250496/2804224679845888/STEM/415e7035-c67a-4d12-957f-03762c552a07.png?resizew=275)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a8943d9c35d8f573d54005a5388b2c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c137b4bc5a50ef4f0dbe23a7f2d89c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b46a7e819a5ed0b789f1f06bb0076422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
您最近一年使用:0次
名校
解题方法
4 . 如图,在三棱锥A-BCD中,AB⊥平面BCD,E为棱AC上的一点,且BE⊥平面ACD.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/9ad79e88-a1b6-4cef-bfa6-69edda63be6b.png?resizew=136)
(1)证明:BC⊥CD;
(2)设BC=CD=1,BC与平面ACD所成的角为45°,求二面角B-AD-C的大小.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/9ad79e88-a1b6-4cef-bfa6-69edda63be6b.png?resizew=136)
(1)证明:BC⊥CD;
(2)设BC=CD=1,BC与平面ACD所成的角为45°,求二面角B-AD-C的大小.
您最近一年使用:0次
2021-09-07更新
|
225次组卷
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2卷引用:福建省福州市闽江学院附属中学2020-2021学年高一6月月考数学试题
5 . 在正方体
中,
是
的中点.
与
所成的角的大小;
(2)求直线
与平面
所成的角的大小.
![](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/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679748eab882a6be0fefd2cc300349a4.png)
您最近一年使用:0次
2021-09-06更新
|
401次组卷
|
2卷引用:上海市金山区上海师范大学第二附属中学2020-2021学年高二下学期第二次月考数学试题
名校
6 . 如图所示,正方体
的棱长为
,点
在棱
上,且
,连结
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2021/9/5/2801163616690176/2802149182545920/STEM/c75d3dbd-ddaf-4eb3-96dc-6e99ba5b5b86.png?resizew=257)
(1)求直线
与平面
所成角的正切值;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b25f3ea33cc08b1e2a0d9c3a9dccaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fcc730e79e3272940af1fabaf6bcde9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35ee685a6d4799b0ba7e114a3906c0c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14bc9983f123701604ea131508334e15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/199336204fbca97766bf24b1dc5fdc53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cfad1ba71a78d8f415335cde2f8c52.png)
![](https://img.xkw.com/dksih/QBM/2021/9/5/2801163616690176/2802149182545920/STEM/c75d3dbd-ddaf-4eb3-96dc-6e99ba5b5b86.png?resizew=257)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56da61b9ab0b6d65ee3b9bb1da80d1c5.png)
您最近一年使用:0次
2021-09-06更新
|
122次组卷
|
3卷引用:上海市实验学校2022届高三上学期摸底考试数学试题
7 . 如图,四棱锥
中,底面
为直角梯形,
,
,
平面
,
,
、
分别为
与
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/d3d1b26f-e588-4d10-911e-709693635edc.png?resizew=159)
(1)证明:
平面
;
(2)求直线
与平面
所成角的正切值.
![](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/9536a2be7b84612f45cc875a00c5a5d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd8e727e4efc22b49649f71ae9c9d84.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/b879e4b8a2e0dc40fdd94932ea8e9bb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/d3d1b26f-e588-4d10-911e-709693635edc.png?resizew=159)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2021-09-05更新
|
463次组卷
|
2卷引用:浙江省精诚联盟2021-2022学年高二上学期返校考试数学试题
8 . 如图①,圆O的直径AB=2,圆上两点C,D在直线AB的两侧,且∠CAB=45°;∠DAB=60°,沿直线AB将半圆ACB折起,使两个半圆所在的平面互相垂直(如图②).
![](https://img.xkw.com/dksih/QBM/2021/5/6/2715351937728512/2799687618404352/STEM/b8b5638b-dd85-479d-a875-cc9dd2af42bf.png?resizew=498)
(1)求三棱锥O-BCD的体积;
(2)求直线CD与平面ABC所成角的正切值.
![](https://img.xkw.com/dksih/QBM/2021/5/6/2715351937728512/2799687618404352/STEM/b8b5638b-dd85-479d-a875-cc9dd2af42bf.png?resizew=498)
(1)求三棱锥O-BCD的体积;
(2)求直线CD与平面ABC所成角的正切值.
您最近一年使用:0次
2021-09-02更新
|
100次组卷
|
2卷引用:广西岑溪市2020-2021学年高一下学期期中考试数学试题
名校
解题方法
9 . 如图,在三棱锥
中,
、
、
两两垂直,且
,过棱
上的动点
(不同于A、
两点)作平行于
、
的平面,分别交三棱锥的棱
、
、
于
、
、
三点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/449cc8a6-feff-42d7-a758-2cbf1ffda0a9.png?resizew=254)
(1)求异面直线
与
所成的角的大小;
(2)求点
到直线
距离的最小值;
(3)求直线
与平面
所成角的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/928fd3522d2c6ad710eccb3dc5e21146.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/449cc8a6-feff-42d7-a758-2cbf1ffda0a9.png?resizew=254)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d666dd3308604685e59f4ca22663b9.png)
您最近一年使用:0次
2021-09-01更新
|
758次组卷
|
2卷引用:上海金山区上海师范大学第二附属中学2020-2021学年高二下学期期末数学试题
名校
10 . 直三棱柱
中,底面
为等腰直角三角形,
,
,
,
是侧棱
上一点,设
.
![](https://img.xkw.com/dksih/QBM/2021/8/27/2795199625912320/2798647814389760/STEM/1b37a6a8-10ef-4518-b57a-111e98fd0c9d.png?resizew=209)
(1)若
,求
的值;
(2)若
,求直线
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/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e9ef3e849788645552cfb0735d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72d4b759e341f967a93fc478e795b72f.png)
![](https://img.xkw.com/dksih/QBM/2021/8/27/2795199625912320/2798647814389760/STEM/1b37a6a8-10ef-4518-b57a-111e98fd0c9d.png?resizew=209)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88517eaaa7c6f423f565f938404105a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e753dc81ed21f878fff89e98cccf24a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7d857811cbd619f868d951aa7a0ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3653ada76ba0c8afe9d57c8e7832c6ed.png)
您最近一年使用:0次
2021-09-01更新
|
197次组卷
|
3卷引用:上海市交通大学附属中学2020-2021学年高二下学期期中数学试题