名校
1 . 如图,在三棱锥
中,
底面
,点D、E分别在棱
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/93605b3b-7060-45ed-b942-ee43cedab949.png?resizew=129)
(1)求证
平面
;
(2)当D为
的中点时,求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/693bf1b92e9b35fc7e5a442a13008af0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace5e8c3769ad8f370c86f879246c174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436f108fd4921dae15ecff19270237e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/93605b3b-7060-45ed-b942-ee43cedab949.png?resizew=129)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)当D为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
2023-05-11更新
|
1246次组卷
|
6卷引用:四川省广安代市中学校2021-2022学年高二上学期第二次月考数学(理)试题
名校
2 . 如图,AB是圆O的直径,AB=2,C是圆O上一点,
,过点C的直线VC垂直于圆O所在平面,D,E分别是VA,VC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/8671c784-88a4-4703-8ef1-3bd9b941612b.png?resizew=173)
(1)求证:DE
平面VBC;
(2)若三棱锥V—ABC的体积为
,求VA与平面VBC所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1896fb53c246e921d2e2ff2c365bdb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/8671c784-88a4-4703-8ef1-3bd9b941612b.png?resizew=173)
(1)求证:DE
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
(2)若三棱锥V—ABC的体积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
您最近一年使用:0次
名校
3 . 如图,正三棱柱
为棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/c33e53a3-8bf8-40b8-b536-bba45bb485ff.png?resizew=149)
(1)证明:
平面
;
(2)证明:平面
平面
;
(3)求直线
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb8dadb0d22b74c0eb829093d7df2138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/c33e53a3-8bf8-40b8-b536-bba45bb485ff.png?resizew=149)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/896e293411e2fd0da215ff20781cb36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b91c857bbe3c4f0f08dd2a4124a96e.png)
(2)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03c5088536dad890222fe47df3de5efb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b91c857bbe3c4f0f08dd2a4124a96e.png)
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4 . 如图,已知
平面
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
,
,
,
点
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/1beb4a97-1f50-4d61-8bdf-2a992f6d0606.png?resizew=131)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
平面
;
(2)求证:平面
平面
;
(3)求直线A1B1与平面ACA1所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25e8fc3dda4f8b45491514b6e22a962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd0cc95217ffdaed3a7e50746683868.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9aeb1eefa6b8e007e21eebd8d46d01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b580472ac4f38fdeecd2b58aff7c51f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d56f9fb2fa021bbe15ebaee7903789e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/1beb4a97-1f50-4d61-8bdf-2a992f6d0606.png?resizew=131)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bea124cef7ab3fd8069243e9894d1c59.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4db20d14afa0458f28ba987648b46f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc4fd5b13f66aaa25632811704596c44.png)
(3)求直线A1B1与平面ACA1所成角的大小.
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5 . 如图,
是⊙O的直径,
垂直于
所在的平面,C是圆周上不同于
的一动点.
![](https://img.xkw.com/dksih/QBM/2021/11/16/2852486726934528/2857641080070144/STEM/910b0e4ce84f488681a740237056e9bd.png?resizew=143)
(1)证明:
是直角三角形;
(2)若
,且当直线
与平面
所成角的正切值为
时,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://img.xkw.com/dksih/QBM/2021/11/16/2852486726934528/2857641080070144/STEM/910b0e4ce84f488681a740237056e9bd.png?resizew=143)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83a04565a8ebaa111894b724b0ba266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2021-11-23更新
|
596次组卷
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12卷引用:四川省南充高级中学2021-2022学年高二上学期第一次月考数学(理科)试题
四川省南充高级中学2021-2022学年高二上学期第一次月考数学(理科)试题江苏省常州市武进区礼嘉中学2020-2021学年高一下学期第二次阶段质量调研数学试题四川省绵阳市盐亭中学2022-2023学年高二上学期入学考试数学试题江苏省泰州中学2019-2020学年高一下学期期中数学试题(已下线)【新东方】杭州新东方高中数学试卷332(已下线)考点50 用综合法求角与距离-备战2022年高考数学一轮复习考点帮(新高考地区专用)【学科网名师堂】江苏省无锡市第一中学2021-2022学年高一艺术班下学期期中数学试题(已下线)13.2.3直线与平面位置关系(3)直线与平面所成角(备作业)-【上好课】2021-2022学年高一数学同步备课系列(苏教版2019必修第二册)(已下线)第50讲 用综合法求角与距离(已下线)拓展二:异面直线所成角,直线与平面所成角,二面角问题(精讲)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)(已下线)模块三 专题8大题分类练(立体几何初步)拔高能力练(苏教版)广东省佛山市南海区九江中学2023-2024学年高二上学期12月月考数学试题
名校
6 . 在四棱锥P–ABCD中,底面ABCD是边长为6的正方形,PD平面ABCD,PD=8.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/03245e16-dacc-4148-8b26-021e54e8d30e.png?resizew=150)
(1)求异面直线PB与DC所成角的正切值;
(2)求PA与平面PBD所成角的正弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/03245e16-dacc-4148-8b26-021e54e8d30e.png?resizew=150)
(1)求异面直线PB与DC所成角的正切值;
(2)求PA与平面PBD所成角的正弦值.
您最近一年使用:0次
2021-11-21更新
|
262次组卷
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3卷引用:四川省眉山市第一中学2021-2022学年高二上学期期中考试数学(文)试题
四川省眉山市第一中学2021-2022学年高二上学期期中考试数学(文)试题上海市第二中学2021-2022学年高二上学期12月月考数学试题(已下线)8.6.2 直线与平面垂直(第1课时)直线与平面垂直的判定(分层作业)-【上好课】
名校
7 . 某商品的包装纸如图1,其中菱形
的边长为3,且
,
,
,将包装纸各三角形沿菱形的边进行翻折后,点E,F,M,N汇聚为一点P,恰好形成如图2的四棱锥形的包裹.
![](https://img.xkw.com/dksih/QBM/2021/11/1/2841764115521536/2844888435130368/STEM/57547906-c9e6-45d6-acdb-400ac2b3ac5b.png?resizew=292)
(1)证明
底面
;
(2)设点T为BC上的点,且二面角
的正弦值为
,试求PC与平面PAT所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d28bead45d13aea39356bbae4b7b1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c11cf3a79f306472abcd43f2c00bfe4.png)
![](https://img.xkw.com/dksih/QBM/2021/11/1/2841764115521536/2844888435130368/STEM/57547906-c9e6-45d6-acdb-400ac2b3ac5b.png?resizew=292)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)设点T为BC上的点,且二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd013aa647d5d82d414644f08d5c4c6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d172f55bc57ef5b5c2c1ad5b167440b2.png)
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2021-11-05更新
|
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6卷引用:四川省南充高级中学2021-2022学年高三上学期第三次月考数学(理)试题
四川省南充高级中学2021-2022学年高三上学期第三次月考数学(理)试题广东省佛山市顺德区2022届高三上学期10月普通高中教学质量检测(一)数学试题广东省佛山市顺德区2022届高三一模数学试题(已下线)热点08 立体几何-2022年高考数学【热点·重点·难点】专练(新高考专用)(已下线)考点33 直线与平面所成的角【理】-备战2022年高考数学典型试题解读与变式湖南省名校联考联合体2021-2022学年高二下学期3月联考数学试题
解题方法
8 . 如图,在四棱锥
中,平面
平面
,
,
,
,
,且
,点
是
上的中点.
![](https://img.xkw.com/dksih/QBM/2021/11/1/2841786445029376/2842023826661376/STEM/49496b54-0e15-4958-bc6a-db6b09528307.png?resizew=252)
(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/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1f29a9fe6b23f79bacb7464e96b292.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed66431681da1db8f7cb0f40cd19201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2686149cd09003b9dcccb51d81fe51ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/2021/11/1/2841786445029376/2842023826661376/STEM/49496b54-0e15-4958-bc6a-db6b09528307.png?resizew=252)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826bf6fa3706921b77ad0eb4fcc206bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68a7bf0da4f7c6f739d2e2461ad9b7.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
9 . 如图,四边形
为矩形,
,
是
的中点,将
沿
翻折至
的位置(点
平面
),设线段
的中点为
,则在翻折过程中,下列论断不正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/10/23/2835674861076480/2836041992454144/STEM/b0364858073741df8c82025f76c1f53b.png?resizew=277)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b929269c53a44907dba8ee298a0a522.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad09a769a75b107390b9eeccc929f761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbe40405cd7bd60d69dd535d6da85c00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6c72495428bbbd12cad3271b0654ee2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6bfad3f7e65188bcf7f62ea5acdbf4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2021/10/23/2835674861076480/2836041992454144/STEM/b0364858073741df8c82025f76c1f53b.png?resizew=277)
A.![]() ![]() |
B.异面直线![]() ![]() |
C.![]() |
D.当平面![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
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解题方法
10 . 如图,长方体
中,
,
,
,
分别是
上的点,且
,过直线
的平面
与
分别交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/cb60e560-6bfd-485a-a363-0c69dea47aa1.png?resizew=238)
(1)求证:四边形
是矩形;
(2)若四边形
是正方形,求直线
与平面
所成的角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf7679c8b4b1e442ce4286d4b0e9c32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/570661f3cd27119447394748b3bae6bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a317122488b47c2fb6b979984361ab50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70daa268c7a0b17f39c1e6eba043a3b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c0f067a2a348ceb24a408f82992eab8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/cb60e560-6bfd-485a-a363-0c69dea47aa1.png?resizew=238)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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