解题方法
1 . 如图,已知四棱锥
中,
平面
为等边三角形,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899334096379904/2916859940020224/STEM/cc215d2c-3ee1-4674-8695-f219b2aed0a6.png?resizew=222)
(1)求证:
平面
;
(2)若
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed35808d0a9c4eb0fad0cee828a140f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e8831817ee6f6e1df1fe5b2f0e3c67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899334096379904/2916859940020224/STEM/cc215d2c-3ee1-4674-8695-f219b2aed0a6.png?resizew=222)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7767d492158189b23af332a8016ed37d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
2 . 如图,在四棱锥
中,平面
平面
,底面
是菱形,E为
的中点.
![](https://img.xkw.com/dksih/QBM/2022/1/20/2898713600466944/2916848745816064/STEM/2e877617b667404abdfec2d213e26009.png?resizew=345)
(1)证明:
.
(2)已知
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee3a9a06454ed9729d3836b64de7487.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2022/1/20/2898713600466944/2916848745816064/STEM/2e877617b667404abdfec2d213e26009.png?resizew=345)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bc56fdf70e65bd88980c64af96b83da.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3307506b2aea8dcc8c95f2a859fd78da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5ba4ee1fd8cf910368d77571a9289b7.png)
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名校
解题方法
3 . 如图所示,点
在圆柱的上底面圆周上,四边形
为圆柱下底面的内接四边形,且
为圆柱下底面的直径,
为圆柱的母线,且
,圆柱的底面半径为1.
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897255262855168/2901601713266688/STEM/a7ed0244-9f85-47a1-9938-5ccfc1951082.png?resizew=128)
(1)证明:
;
(2)
为
的中点,点
在线段
上,记
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](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/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e0f73b3c63084d9c032802e01f9a168.png)
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897255262855168/2901601713266688/STEM/a7ed0244-9f85-47a1-9938-5ccfc1951082.png?resizew=128)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf6c62979a7aa534a191d8387a741e8.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d60c28ecd0d4cb32cd0cec627e42845.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac42517cf387345689e1457f62a80ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dabd4825868ffef1f65fc8f44488a1c3.png)
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2022-01-24更新
|
965次组卷
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6卷引用:山西省大同市2022届高三上学期期末数学(理)试题
山西省大同市2022届高三上学期期末数学(理)试题山西省晋中市2022届高三上学期1月适应性调研数学(理)试题山西省朔州市怀仁市第一中学2022届高三下学期第一次模拟数学(理)试题(已下线)专题06 空间向量与立体几何(数学思想与方法)-备战2022年高考数学二轮复习重难考点专项突破训练(全国通用)陕西省宝鸡市2022届高三下学期三模理科数学试题贵州省贵阳市五校2022届高三联合考试(七)数学(理)试题
名校
4 . 如图,在三棱柱
中,侧面
底面ABC,
,且O为AC的中点.
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899480687181824/2901571237675008/STEM/ec54c6df-c6cc-4318-8366-2a7f756f3fc2.png?resizew=202)
(1)求证:
平面ABC;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0671b4776e142e17a79af5b3f0378ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e1c1515fdc4c20a72a9e8d14eafadd3.png)
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899480687181824/2901571237675008/STEM/ec54c6df-c6cc-4318-8366-2a7f756f3fc2.png?resizew=202)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e5981445b6f2a6c58974158d96a4de.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ead078d0c9a22439c512767bf3d4c7.png)
您最近一年使用:0次
2022-01-24更新
|
517次组卷
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2卷引用:山西省怀仁市第一中学2022届高三上学期期末数学(理)试题
名校
解题方法
5 . 如图,在三棱柱
中,侧面
底面
,
为
的中点,且
.
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899480640356352/2901503910928384/STEM/129610c3-b159-411f-b156-77c333516a38.png?resizew=219)
(1)求证:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0671b4776e142e17a79af5b3f0378ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f3219654520ecda44e338fe67ca40e.png)
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899480640356352/2901503910928384/STEM/129610c3-b159-411f-b156-77c333516a38.png?resizew=219)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e5981445b6f2a6c58974158d96a4de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9539f8fb13345b449274b67bbda995db.png)
您最近一年使用:0次
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解题方法
6 . 如图,在四棱锥
中,底面ABCD是正方形,侧棱
底面ABCD,
,E、F分别是PC、AD中点.
![](https://img.xkw.com/dksih/QBM/2022/1/19/2897813905702912/2899880059895808/STEM/95ecc8ff-060b-453b-80ee-f56e86d6a895.png?resizew=144)
(1)求证:
平面PFB;
(2)求平面PBC与平面PBD夹角的余弦值.
![](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/43d4c42112e0a22f240ce2ae432e5b4d.png)
![](https://img.xkw.com/dksih/QBM/2022/1/19/2897813905702912/2899880059895808/STEM/95ecc8ff-060b-453b-80ee-f56e86d6a895.png?resizew=144)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/063510e3c1fb6a7ccc3b8e3e3c7d660e.png)
(2)求平面PBC与平面PBD夹角的余弦值.
您最近一年使用:0次
2022-01-22更新
|
218次组卷
|
2卷引用:山西省临汾市第一中学2021-2022学年高二上学期期末数学试题
7 . 如图,在四棱锥
中,底面ABCD为正方形,
平面ABCD,E为PD的中点,
.
![](https://img.xkw.com/dksih/QBM/2022/1/16/2895970623094784/2897148336971776/STEM/e8c6e79e-0111-443e-acf0-55d72d8ebefc.png?resizew=176)
(1)求证:
平面PCD;
(2)求直线PC与平面AEC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/0e7b6d04f024ca05cdfacc8ce9137c15.png)
![](https://img.xkw.com/dksih/QBM/2022/1/16/2895970623094784/2897148336971776/STEM/e8c6e79e-0111-443e-acf0-55d72d8ebefc.png?resizew=176)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
(2)求直线PC与平面AEC所成角的正弦值.
您最近一年使用:0次
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8 . 如图,在四棱锥P-ABCD中,底面ABCD为矩形,
平面ABCD,PA=AD=2,AB=1,E为棱PD的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/c18f5be0-438c-47ce-a6d0-24d8aabc26cb.png?resizew=178)
(1)求证:
平面PCD;
(2)求平面AEC与平面PAC的夹角余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/c18f5be0-438c-47ce-a6d0-24d8aabc26cb.png?resizew=178)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
(2)求平面AEC与平面PAC的夹角余弦值.
您最近一年使用:0次
2022-01-17更新
|
234次组卷
|
2卷引用:山西省大同市2021-2022学年高二上学期期末数学(理)试题
9 . 已知梯形
如图(1)所示,其中
,
,
,
,过点A作BC的平行线交线段CD于M,点N为线段BC的中点.现将
沿AM进行翻折,使点D到达点P的位置,且平面
平面
,得到的图形如图(2)所示.
![](https://img.xkw.com/dksih/QBM/2022/1/16/2895941057585152/2896563462602752/STEM/a12e0e12-89e1-457a-b5ad-e92d59649197.png?resizew=468)
(1)求证:
;
(2)若
,若点H为线段PC的中点,求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0d7095ddd69d6ceaf1065b1bc2c79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/386c7de62e8f9a8161ebaefe6b4ec35e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e4150583bb730627d98e250153a704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50244defdb202cc420e1d6a910241c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392469b357b12b998528499929366c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bdef2e7a7929ad6190302ab44c46c0.png)
![](https://img.xkw.com/dksih/QBM/2022/1/16/2895941057585152/2896563462602752/STEM/a12e0e12-89e1-457a-b5ad-e92d59649197.png?resizew=468)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3806b2aba97557bc4aa84d6eb0144ba4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cdd615843adf3e011e5b72f9c608bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ce50ba5e349425274f05d46d120a74.png)
您最近一年使用:0次
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10 . 如图,在正四棱锥
中,点
,
分别是
,
中点,点
是
上的一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/d5166807-742d-4c81-977b-33f311b7e039.png?resizew=174)
(1)证明:
;
(2)若四棱锥
的所有棱长为
,求直线
与平面
所成角的正弦值的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f08faa7f1550cb3732de12b2be5fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7e6a0213f4a15624301afe1e84e1984.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/d5166807-742d-4c81-977b-33f311b7e039.png?resizew=174)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c87ac3216588aa3b5c149701192697.png)
(2)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f08faa7f1550cb3732de12b2be5fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/804c767ba8ba0ac1fc157fc345cea965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c406c4f1880daebcccf913ba3f93512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/915fcf66103a28a085ae80007b378751.png)
您最近一年使用:0次
2022-01-15更新
|
739次组卷
|
4卷引用:山西省吕梁市临县第一中学2022届高三上学期期末数学试题