名校
解题方法
1 . 如图,已知四棱柱
中,四棱锥
是正四棱锥,
,
,
分别为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/1f3af7de-4ac9-4bbd-845b-f2fd28f91715.png?resizew=191)
(1)求直线
与平面
所成角的正弦值;
(2)若平面
经过
且与
平行,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68497234d15897be0feae45013ae21a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ca48cd27d4bf9d9ef084b558fc17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdce14090c1b4029157b50a766650616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/1f3af7de-4ac9-4bbd-845b-f2fd28f91715.png?resizew=191)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0593f7294dbd7a04fa494ea28b10e21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f664c0db517bec6886ff0b6100fd474.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ecad355286188fd317939fa50f9555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
名校
2 . 如图,在三棱柱
中,底面
侧面
.
(1)证明:
平面
;
(2)若三棱锥
的体积为
为锐角,求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b3e80d3a58ac3cf00b42f41747c311.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/28bf2a63-9877-4a90-b31e-32b3dbd6e259.png?resizew=165)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26d8a9d64ad3c8cba28840b41ed7837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
(2)若三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aab8cba157598642cb6b42734861a184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f217108ab64f0c7b5d097e564a7adf63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd06851d747f8ccf046bc807b2523e65.png)
您最近一年使用:0次
2024-01-24更新
|
194次组卷
|
2卷引用:安徽省舒城中学2023-2024学年高二下学期开学考试数学试卷
解题方法
3 . 在正方体中,设
,若二面角
的平面角的正弦值为
,则实数
的值为
您最近一年使用:0次
2024-01-09更新
|
253次组卷
|
4卷引用:安徽省亳州市第十八中学2023-2024学年高二上学期全市统考第一次模拟考试数学试卷
安徽省亳州市第十八中学2023-2024学年高二上学期全市统考第一次模拟考试数学试卷(已下线)专题13 空间向量的应用10种常见考法归类(4)河南省南阳市桐柏县2023-2024学年高二上学期期末质量检测数学试题(已下线)3.4.3 求角的大小(九大题型)(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)
名校
4 . 如图,在四面体
中,
平面
,
是
的中点,
是
的中点,点
在线段
上,且
.
(1)求证:
平面
;
(2)若
,
,求
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276e3c9755dbd39fb01de614840d230f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/8/ef6a6ebb-5ffa-4529-ba15-c4471d878db6.png?resizew=150)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9abe6e8d1f4f1e8bdc46ddbae0cd789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a07294c172f7055d46247353ed82ca81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967a99672b0ee1dd644a3cb0942a834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4eb857e33ab763e60bec825c84e22e1.png)
您最近一年使用:0次
2024-01-06更新
|
491次组卷
|
3卷引用:安徽省六安第二中学2023-2024学年高二上学期期末统考数学试卷
解题方法
5 . 手工课可以提高学生的动手能力、反应能力、创造力.某小学生在一次手工课上制作了一座漂亮的房子模型,它可近似地看成是一个直三棱柱和一个正方体的组合体.其直观图如图所示,
,
,
、
、
、
分别是棱
、
、
、
的中点,则异面直线
与
所成角的余弦值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd1ea8de33f0b596d6cf06138766acb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433163f25ef7c4c8237eaf6c7e44c614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e516121599c9fcc528121c00afcf52fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f348ed8a1690d3ed02aa64459ca50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/29/9119482b-b992-4b51-bc43-b7c73535244a.png?resizew=146)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-12-28更新
|
344次组卷
|
5卷引用:安徽省亳州市第十八中学2023-2024学年高二上学期全市统考第一次模拟考试数学试卷
安徽省亳州市第十八中学2023-2024学年高二上学期全市统考第一次模拟考试数学试卷江西省“三新”协同教研共同体2023-2024学年高二上学期12月联考数学试卷 (已下线)模块五 专题4 期末全真模拟(能力卷2)期末终极研习室(高二人教A版)湖北省武汉市新洲区部分学校2023-2024学年度高二上学期期末质量检测数学试卷(已下线)6.3 空间向量的应用 (3)
6 . 如图,在直三棱柱
中,
,
为棱
的中点,
,二面角
的大小为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/23/06a66602-3044-4524-9529-59d823918a91.png?resizew=209)
(1)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/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6e4a2df58a236c20df5df0d29a466c.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/0685676650662a1f1a7dc762792979b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e32f701757a5bf0c41cc3a7745fdd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/23/06a66602-3044-4524-9529-59d823918a91.png?resizew=209)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd597851c0db4e4de4769e10e09383b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae0e7e39306c02ab9c0d606dbca6685e.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae0e7e39306c02ab9c0d606dbca6685e.png)
您最近一年使用:0次
名校
7 . 如图,菱形
的对角线
与
交于点
,
,
,点
,
分别在
,
上,
,
交
于点
,将
沿
折到
位置,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/38e6c4af-85c4-4c06-b5f4-614b3231e54d.png?resizew=228)
(1)证明:
平面
;
(2)求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4af42b23810ede42d88067f5d86dbc5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e8bb1e2dbfd5c00e6a5432bb288265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/803cac9a91f6664dbe83e1d9fc4c8833.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/38e6c4af-85c4-4c06-b5f4-614b3231e54d.png?resizew=228)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fdfc11936fa2b2817d0ddedb1f80d8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b2482ff6179d31f535161beef463e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f921b462ee12ad5749ea45d75f609b7.png)
您最近一年使用:0次
2023-12-20更新
|
2098次组卷
|
6卷引用:安徽省合肥一六八中学2024届高三“九省联考”考后适应性测试数学试题(一)
安徽省合肥一六八中学2024届高三“九省联考”考后适应性测试数学试题(一)四川省南充市南充高级中学2023-2024学年高二上学期第二次月考数学试题(已下线)2024年1月普通高等学校招生全国统一考试适应性测试(九省联考)数学试题变式题16-19(已下线)专题13 空间向量的应用10种常见考法归类(2)(已下线)6.3 空间向量的应用 (4)(已下线)专题04 立体几何
名校
解题方法
8 . 在斜三棱柱
中,
,
,
在底面
上的射影恰为
的中点
,又已知
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/c90ff65e-f009-4f2b-b171-726db9d87ac8.png?resizew=160)
(1)证明:
平面
.
(2)求平面
和平面
的夹角的余弦值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/003a97711c5ed89f10594e0aedcabfa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209acf15985d1ea1ad86fc4a37e38c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2befa96c33901247429a833c46eb193.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/c90ff65e-f009-4f2b-b171-726db9d87ac8.png?resizew=160)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ef671ff46a372d5351b8c2f9eb26b48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
您最近一年使用:0次
名校
解题方法
9 . 如图,在正方体
中,E,F,G分别是
,
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/98ffef06-8ff5-41b2-aadf-df77276cbb80.png?resizew=157)
(1)证明:
.
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/98ffef06-8ff5-41b2-aadf-df77276cbb80.png?resizew=157)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f838933ac032270e24d15265461a89bd.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab8375daa062d56ac9dcd77eebcf9f4.png)
您最近一年使用:0次
2023-12-18更新
|
141次组卷
|
4卷引用:安徽省六安市舒城县晓天中学2023-2024学年高二上学期期中数学试题
安徽省六安市舒城县晓天中学2023-2024学年高二上学期期中数学试题(已下线)专题02 空间向量与空间角、空间距离【考题猜想】-2023-2024学年高二数学上学期期中考点大串讲(人教A版2019选择性必修第一册)云南省昭通市一中教研联盟2023-2024学年高二上学期期末质量检测数学试题(C卷)(已下线)6.3 空间向量的应用 (4)
名校
解题方法
10 . 在四棱锥
中
底面
,底面
是菱形,
,
,点
在
上.
平面
;
(2)若
为
中点,求直线
与平面
所成的角的正弦值.
![](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/1ba172e1d3af3079d5d8fcb3791d6484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0df49b91d399a0b28d5ad86b84b1f42d.png)
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
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4卷引用:安徽省马鞍山市第二中学2023-2024学年高二下学期阶段性检测数学试题
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