名校
解题方法
1 . 如图所示,在四棱锥
中,底面是直角梯形,
,
,
和
相交于点
,面
面
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/7/12/3021096808988672/3023060469628928/STEM/7e3186e9291e4ab9bb75ed4a2fc86da5.png?resizew=175)
(1)在线段
上确定一点
,使得
面
,求此时
的值;
(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/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7ea9d92e5c258a50af1e461c7388894.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83d2bac640d595f3bda4f1cd983fe0ea.png)
![](https://img.xkw.com/dksih/QBM/2022/7/12/3021096808988672/3023060469628928/STEM/7e3186e9291e4ab9bb75ed4a2fc86da5.png?resizew=175)
(1)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acf2bc3dd1f1ae5d5e28b0366f454ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68a7bf0da4f7c6f739d2e2461ad9b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced22fbe85d4a749c7b0b6bbae3ea3e7.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,在四棱锥
中,
,
,
,
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/2022/7/12/3021096910823424/3022900065009664/STEM/b097e059e4f64abd99219ff26eafcf98.png?resizew=226)
(1)求证:
;
(2)若直线
与平面
所成角的为
,求直线
与直线
所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/625bca170fed3fbdc1441b3c0df4a6bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d730ae4307db56b47849c3a19dedfb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db27b7f29d7d01b2692f217bc3079fc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b85c51162539939ebdbaf8ff3749eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2022/7/12/3021096910823424/3022900065009664/STEM/b097e059e4f64abd99219ff26eafcf98.png?resizew=226)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b07e317ffe7859e81b42ef4970e344a.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
名校
解题方法
3 . 如图,正三棱柱
的所有棱长均为2,
为线段
的中点,
为正方形
对角线的交点.
![](https://img.xkw.com/dksih/QBM/2022/7/12/3021096910823424/3022900064698368/STEM/6718f26e67bc47fead02dbd883ed9f9b.png?resizew=143)
(1)求证:
面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
![](https://img.xkw.com/dksih/QBM/2022/7/12/3021096910823424/3022900064698368/STEM/6718f26e67bc47fead02dbd883ed9f9b.png?resizew=143)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a407b262c22419f73396170ecdc849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239198e40085b7dcffbe747c9c265a05.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cee2e0f3000009285b414e6c0144768.png)
您最近一年使用:0次
2022-07-15更新
|
1169次组卷
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3卷引用:重庆市第七中学校2021-2022学年高一下学期期末数学试题
名校
4 . 在四棱锥
中,已知
,
,
,
,
,
,
是
上的点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/105a73d3-a019-41f5-82a9-52d13966c1f5.png?resizew=146)
(1)求证:
底面
;
(2)是否存在点
使得
与平面
所成角的正弦值为
?若存在,求出该点的位置;不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60964e720188e325eb18c9528b1fa95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fd3c2e2199cd4565c05b949bc21fc37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c85aeab3aeaf4367b711da8cde2e8bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2899e607479d8d1c47d954ae9ebb7144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/105a73d3-a019-41f5-82a9-52d13966c1f5.png?resizew=146)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
您最近一年使用:0次
2022-07-13更新
|
1437次组卷
|
5卷引用:重庆市南开中学校2021-2022学年高二下学期期末数学试题
名校
5 . 四棱锥
中,四边形
为菱形,
,
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/29/1529d48c-dbc9-4bb9-95bb-4161869432ae.png?resizew=218)
(1)证明:
;
(2)若
,且PA与平面ABCD成角为60°,在棱PC上是否存在点E,使二面角
的平面角的余弦值为
?若存在,求出PE的长;若不存在,说明理由.
![](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/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71a46dc0bb5d8fa33583817e530a5d21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04c222223dae9ef27d4c132534d9848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/29/1529d48c-dbc9-4bb9-95bb-4161869432ae.png?resizew=218)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccbd1316b9d1f0c1e71fd078deec61f6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d0710321d97361e5782124bbf7f0c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6f1d672d4d7775a81ccf0464a8d742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954795d1842974a705f9468f3b952ab1.png)
您最近一年使用:0次
2022-07-13更新
|
1008次组卷
|
2卷引用:重庆市南开中学校2021-2022学年高一下学期期末数学试题
名校
解题方法
6 . 如图,在直三棱柱
中,
,
,M为AB的中点,点G为
的重心.
![](https://img.xkw.com/dksih/QBM/2022/7/8/3018246551642112/3021627553013760/STEM/dbdd31b2a613450caa9facecd26e67ca.png?resizew=166)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4e7552a39c412d882766dbcd7eeb69.png)
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/178a27068cf5517ad64f211af10256ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90e17995e2f71e297d94ae51c7e5b1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://img.xkw.com/dksih/QBM/2022/7/8/3018246551642112/3021627553013760/STEM/dbdd31b2a613450caa9facecd26e67ca.png?resizew=166)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4e7552a39c412d882766dbcd7eeb69.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bba1bc5bfc7338a582e4b6792885014.png)
您最近一年使用:0次
7 . 如图,正四棱锥
中.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/14/92c340fe-bf62-4e59-9153-22c585c440b7.png?resizew=212)
(1)求证:平面PAC⊥平面PBD;
(2)若
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/14/92c340fe-bf62-4e59-9153-22c585c440b7.png?resizew=212)
(1)求证:平面PAC⊥平面PBD;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9801cabc43c024b9c5fac34b7db5d69b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d7d6e5be7914a224e94a7b7e409a79c.png)
您最近一年使用:0次
2022-07-08更新
|
892次组卷
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4卷引用:重庆市长寿区2021-2022学年高一下学期期末数学(B)试题
重庆市长寿区2021-2022学年高一下学期期末数学(B)试题青海省西宁市2022-2023学年高一下学期期末调研测试数学试题(已下线)微专题16 利用传统方法轻松搞定二面角问题(已下线)2023年高考全国乙卷数学(理)真题变式题16-20
名校
解题方法
8 . 如图,四棱锥P-ABCD中,底面ABCD是正方形,PD⊥平面ABCD,
,E、F分别是PC、AD中点.
![](https://img.xkw.com/dksih/QBM/2022/7/7/3017587502268416/3018367612116992/STEM/a7cc00d606ed439a85a676ecc54a5a95.png?resizew=175)
(1)求直线DE和PF夹角的余弦值;
(2)求点E到平面PBF的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99926bf272cd757f0985c69b390ebcce.png)
![](https://img.xkw.com/dksih/QBM/2022/7/7/3017587502268416/3018367612116992/STEM/a7cc00d606ed439a85a676ecc54a5a95.png?resizew=175)
(1)求直线DE和PF夹角的余弦值;
(2)求点E到平面PBF的距离.
您最近一年使用:0次
2022-07-08更新
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1864次组卷
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13卷引用:重庆市长寿区2021-2022学年高二下学期期末数学(B)试题
重庆市长寿区2021-2022学年高二下学期期末数学(B)试题广东省人大附中深圳学校2022-2023学年高二上学期期末数学试题(已下线)7.6 空间向量求空间距离(精练)第一章 空间向量与立体几何(A卷·知识通关练)-【单元测试】2022-2023学年高二数学分层训练AB卷(人教A版2019)山东省滨州市沾化区实验高级中学2022-2023学年高二上学期10月月考数学试题河南省濮阳市2023-2024学年高二上学期9月大联考数学试题山东省枣庄市第八中学2023-2024学年高二上学期10月月考数学试题广东省湛江市雷州市第二中学2023-2024学年高二上学期第一次月考数学试题陕西省西安市周至县第四中学2023-2024学年高二上学期第一次月考数学试题广东省湛江市雷州市第一中学2023-2024学年高二上学期第一次月考数学试题陕西省西安市长安区2023-2024学年高二上学期10月月考数学试题贵州省都匀兴华中学2023-2024学年高二上学期阶段测试(一)数学试题黑龙江省大庆铁人中学2023-2024学年高二上学期期中考试数学试题
9 . 如图,AB是圆柱
的一条母线,BC过底面圆心O,D是圆O上一点.已知
,
(2)将四面体ABCD绕母线AB所在的直线旋转一周,求
的三边在旋转过程中所围成的几何体的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/270ddac9587bf1ea553914cb69595ab2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50be1057156b40a5f6b87be5194d728.png)
(2)将四面体ABCD绕母线AB所在的直线旋转一周,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
您最近一年使用:0次
2022-07-08更新
|
904次组卷
|
7卷引用:重庆市巫山大昌中学校2021-2022学年高一下学期期末数学试题
解题方法
10 . 如图所示,四棱锥
中,底面
为菱形,点
在底面的投影
点恰好是菱形
对角线交点,点
为侧棱
中点,若
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/11/675ecb92-1a97-49d0-ab50-007ad800a1f4.png?resizew=186)
(1)求证:平面
⊥平面
;
(2)点
在线段
上,且
,求二面角
的平面角的正弦值.
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8d245c35c56ded2ceb001c06a5d0ca7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/11/675ecb92-1a97-49d0-ab50-007ad800a1f4.png?resizew=186)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a862ec7c8b3dc2682988b28cbbb5d5aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca64fb6cecb2747e650488fed5550f7d.png)
您最近一年使用:0次
2022-07-08更新
|
509次组卷
|
4卷引用:重庆市七校2021-2022学年高一下学期期末数学试题