解题方法
1 . 如图,在
中,
底面
.
(1)求三棱锥
的体积;
(2)求证:
平面
.
![](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/eab46ac80d6d3d0279091fe6b18946ba.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/c5748339-5763-4cdf-a56b-09555304b736.png?resizew=133)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,在四棱锥P-ABCD中,平面
平面ABCD,
,
,
,
,
,E,H分别是棱AD,PB的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/18/24fc86d5-6fba-4427-ac37-44971b4cf24d.png?resizew=210)
(1)证明:
平面PCE;
(2)若
,求点P到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62974d34de3a12418d6b700420afd1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4ab7e657f01bdfa235f8c4d6681d13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e0b7d845cbceccd3e76ca461fcc534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/18/24fc86d5-6fba-4427-ac37-44971b4cf24d.png?resizew=210)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd3eb538f36e6e722e4ce125266b99b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b270ada8aaadf28043fa4525c57e653d.png)
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3 . 如图,在四棱锥
中,底面
是矩形,
是
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/91fa983f-007b-4abc-b7ca-5029591f172f.png?resizew=189)
(1)求证:平面
平面
;
(2)求点
到平面
的距离.
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7898f562dffdf08263bfb0873e0691.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03bb46e45e9c26b15d53a5dc53185aca.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/91fa983f-007b-4abc-b7ca-5029591f172f.png?resizew=189)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
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2022-11-27更新
|
1399次组卷
|
7卷引用:甘肃省张掖市某重点校2022-2023学年高三上学期第三次模拟考试数学(文)试题
名校
解题方法
4 . 如图,在四棱锥
中,底面
是矩形,
是
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/75a493f4-6ef6-4ec5-9d9f-3a64204c759a.png?resizew=169)
(1)求证: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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7898f562dffdf08263bfb0873e0691.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03bb46e45e9c26b15d53a5dc53185aca.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/75a493f4-6ef6-4ec5-9d9f-3a64204c759a.png?resizew=169)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
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2022-11-27更新
|
1513次组卷
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7卷引用:甘肃省张掖市某重点校2022-2023学年高三上学期第三次模拟考试数学(理)试题
名校
5 . 如图,四棱锥P-ABCD中,AP⊥平面PCD,
,
,
,E为AD的中点,AC与BE相交于点O.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/1d2c665d-7284-4e30-920e-8ac8b13b24ea.png?resizew=222)
(1)求证:PO⊥平面ABCD;
(2)求直线AB与平面PBD所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b377f22aafd3742ad860f77abaacef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f2d58e450193da0539a687dabf0bfa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/1d2c665d-7284-4e30-920e-8ac8b13b24ea.png?resizew=222)
(1)求证:PO⊥平面ABCD;
(2)求直线AB与平面PBD所成角的正弦值.
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名校
6 . 如图,在四棱锥P-ABCD中,平面
平面ABCD,PA=PD,
,
,AD=CD=2,AB=3,E是棱AD的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/080cffce-e033-4c60-b855-93295692faf0.png?resizew=165)
(1)证明:
平面PCE;
(2)若
,求平面PCE与平面PAB所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4ab7e657f01bdfa235f8c4d6681d13.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/080cffce-e033-4c60-b855-93295692faf0.png?resizew=165)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3ad66112b09c909cab417085702ec00.png)
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2022-11-19更新
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392次组卷
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4卷引用:甘肃省兰州市兰州西北中学2022-2023学年高三上学期期中数学(理科)试题
7 . 如图,在四棱锥
中,四边形ABCD为菱形,且
,
平面ABCD,E为BC的中点,F为棱PC上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/f9adb711-677e-4c8b-998f-20a03b324c74.png?resizew=190)
(1)求证:平面
平面PAD;
(2)当F为PC的中点,且
时,求点P到平面AEF的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05740f0c6071846227dc0ec177ad15e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/f9adb711-677e-4c8b-998f-20a03b324c74.png?resizew=190)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
(2)当F为PC的中点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b5d2943803894bc5d204e75e2d172b.png)
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2022-06-13更新
|
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|
4卷引用:甘肃省金昌市永昌县第一高级中学2022-2023学年高三上学期第一次模拟考试数学(文)试题
解题方法
8 . 如图,在多面体ABCDEF中,四边形ABCD是正方形,AF
DE,
,DE⊥AD,AC⊥BE.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/35d1cf60-4498-429b-8114-9cc9a2b87b7d.png?resizew=146)
(1)证明:平面ADEF⊥平面ABCD.
(2)求平面ACE与平面ABF所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7003aee0b4b85f0fdd48ca9ae5826d54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e5f4002264b874863fba6aae870464.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/35d1cf60-4498-429b-8114-9cc9a2b87b7d.png?resizew=146)
(1)证明:平面ADEF⊥平面ABCD.
(2)求平面ACE与平面ABF所成锐二面角的余弦值.
您最近一年使用:0次
2022-10-24更新
|
559次组卷
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7卷引用:甘肃省靖远县第四中学2022-2023学年高三上学期第一次月考数学(理)试题
甘肃省靖远县第四中学2022-2023学年高三上学期第一次月考数学(理)试题广东省揭阳市普宁市勤建学校2022-2023学年高二上学期第一次调研数学试题青海省西宁市湟中区2022-2023学年高三上学期期中考试数学(理)试题福建省南安市柳城中学2022-2023学年高二上学期11月期中考试数学试题重庆市2023届高三冲刺押题联考(二)数学试题(已下线)广东实验中学2024届高三上学期第一次阶段考试数学试题变式题15-18(已下线)期中真题必刷常考60题(22个考点专练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)
9 . 如图1所示,在平面多边形
中,四边形
为长方形,
为正三角形,
,
,沿
将
折起到
的位置,使得平面
平面
(图2).
![](https://img.xkw.com/dksih/QBM/2022/10/18/3090189744463872/3094048473079808/STEM/a783d4ac1d404786ab84dd5f1e7b4930.png?resizew=423)
(1)证明:
;
(2)若点
为线段
的中点,求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c28c0e74a2053dc5ad9988154a7e1977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9db15366bd28ad77da8c1f300d8625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce552d6e4e8bca4d93e5cb01d8685600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0605f0eab4ccf706d8a82f7f86092c63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9db15366bd28ad77da8c1f300d8625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987b90f5a645cb56a8db95dc3a7c38d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f26bcf15939ea6ef6334e199640523cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2022/10/18/3090189744463872/3094048473079808/STEM/a783d4ac1d404786ab84dd5f1e7b4930.png?resizew=423)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64fe20370c994eda681d4b73db18c4f.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2ed2b90e45a160e26c5b6ee9d4fef8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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10 . 如图,在多面体
中,四边形
是正方形,
,
,
,
.
平面
;
(2)若四棱锥
的体积为
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4943035b141050326563331fb801453e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e5f4002264b874863fba6aae870464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad7bebf66b81b1226a41c2eaf4bd98b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e43e0b55d9d54e2f3bb6059fe038ead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9552eada20b97643c490ebf5aeae0598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf71e2420e904e829c31dc2b5996962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577955884e47a3e27d055167ccbc3fd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b6a742dbacdab5aaa298007663dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
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