1 . 如图,在五面体ABCDE中,已知
,
,且
,
.
![](https://img.xkw.com/dksih/QBM/2022/5/2/2970937454297088/2973345847771136/STEM/4da81faf-84ef-493b-929a-500c92b6a63d.png?resizew=190)
(1)求证:平面
平面ABC;
(2)线段BC上是否存在点F,使得二面角
的余弦值为
,若存在,求CF的长度;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4025b7c8380b8aeb5a31a5e14eafa98b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c352de810b76760d3ba05997ac928509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7422660f0635be92e11838af5f4b4b5e.png)
![](https://img.xkw.com/dksih/QBM/2022/5/2/2970937454297088/2973345847771136/STEM/4da81faf-84ef-493b-929a-500c92b6a63d.png?resizew=190)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c309e58bf083bad13abd549720a63a22.png)
(2)线段BC上是否存在点F,使得二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96040590db621faa8ac1d862c319d2de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c14ff9b66f21c05e52dc3c8908c2df.png)
您最近一年使用:0次
2022-05-06更新
|
1188次组卷
|
2卷引用:福建省永春第一中学2021-2022学年高二下学期期末考试数学试题
2 . 如图,四棱锥P-ABCD中,PA⊥底面ABCD,AB⊥AD,点E在线段AD上,
.
![](https://img.xkw.com/dksih/QBM/2022/4/28/2967945479561216/2969215239897088/STEM/29dd609ea2a94970a594520d03f8e5a5.png?resizew=241)
(1)求证:CE⊥PD;
(2)若PA=
,AB=
,AD=
,且
,求平面ABP与平面PCE所成锐二面角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/126fdae0b1adc7361f945187b861fb20.png)
![](https://img.xkw.com/dksih/QBM/2022/4/28/2967945479561216/2969215239897088/STEM/29dd609ea2a94970a594520d03f8e5a5.png?resizew=241)
(1)求证:CE⊥PD;
(2)若PA=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df2269d2a1d43f535599b4e380adb355.png)
您最近一年使用:0次
解题方法
3 . 四棱锥
中,
平面
,四边形
为菱形,
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2022/4/26/2966513745526784/2969120521682944/STEM/e762283807134d1ea3ea354e2862ac9d.png?resizew=331)
(1)求证:平面
平面
;
(2)求直线
与平面
所成角的正弦值;
(3)求二面角
的余弦值.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a58a622e2b1a239f2f96aa1501e9799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b10835116b9b777a666b438c907b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2022/4/26/2966513745526784/2969120521682944/STEM/e762283807134d1ea3ea354e2862ac9d.png?resizew=331)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22583ac400216f5aa56a84284efe4b12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e867e5c7ef4da37d8985ce82022060e.png)
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4 . 在棱长为4的正方体
中,点
分别在线段
上,点
在线段
延长线上,
,
,连接
交线段
于点
.
![](https://img.xkw.com/dksih/QBM/2022/3/24/2943276202401792/2944007449894912/STEM/913dc4f6e748498695a48914400bca12.png?resizew=354)
(1)求证
平面
;
(2)求异面直线
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d38d55abb3d962e0b5dabb089251bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9df6067303b8a4a7ed2551e2a204c0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f0ebfb74927c3fa92370ccca92ca5af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://img.xkw.com/dksih/QBM/2022/3/24/2943276202401792/2944007449894912/STEM/913dc4f6e748498695a48914400bca12.png?resizew=354)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5830646a912c3a916beac4f88c116b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad48b3905433001a44126e02ac8eba7.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b17f4f3c99807635406df53e55f138c.png)
您最近一年使用:0次
名校
5 . 如图,四棱锥
中,平面EAD⊥平面ABCD,
,且
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8417ec4536b8abcfc7cb08d9a5ddeadb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/7234feb3-0a17-4907-8c6e-c5be23a884a7.png?resizew=149)
(1)求证:BD⊥平面ADE;
(2)求BE与平面CDE所成角的正弦值;
(3)在线段CE上是否存在一点F使得平面BDF⊥平面CDE,若存在,请求出F的具体位置:若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9d6480ca90755d646f6c63563052050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8417ec4536b8abcfc7cb08d9a5ddeadb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/7234feb3-0a17-4907-8c6e-c5be23a884a7.png?resizew=149)
(1)求证:BD⊥平面ADE;
(2)求BE与平面CDE所成角的正弦值;
(3)在线段CE上是否存在一点F使得平面BDF⊥平面CDE,若存在,请求出F的具体位置:若不存在,请说明理由.
您最近一年使用:0次
名校
解题方法
6 . 如图,在正方体
中,
,
分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/30/2990681778905088/2991510612713472/STEM/aa29eea8-1003-4360-9aed-381242d5588b.png?resizew=192)
(1)求证:
平面
;
(2)求直线
与平面
的夹角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
![](https://img.xkw.com/dksih/QBM/2022/5/30/2990681778905088/2991510612713472/STEM/aa29eea8-1003-4360-9aed-381242d5588b.png?resizew=192)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93cf663ee2bf1ac5c43f4306fa0cf250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c3d4ce1c93577849ede590111fdf14.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96872cd6cd581ae8a861c7032e0257b4.png)
您最近一年使用:0次
名校
7 . 如图,四棱锥
中,平面
平面
,平面
平面
,四边形
中,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/5/30/2990327673200640/2991350766583808/STEM/7c16d9da-4327-440b-8ab7-608929df02d5.png?resizew=205)
(1)求证:
平面
;
(2)设
,若直线
与平面
所成的角为
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.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/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8662b5accb22139aa2dfe2ff23c4668c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d79e7020414add95907e061df505ef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/728e94fa6236a1d14d642d1cdac579e9.png)
![](https://img.xkw.com/dksih/QBM/2022/5/30/2990327673200640/2991350766583808/STEM/7c16d9da-4327-440b-8ab7-608929df02d5.png?resizew=205)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a109c829d652632a88ade6924fcda206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2022-05-31更新
|
953次组卷
|
4卷引用:四川省南充市2021-2022学年高二下学期期末考试数学(理)试题
四川省南充市2021-2022学年高二下学期期末考试数学(理)试题(已下线)1.2.3 直线与平面的夹角湖北省襄阳市第四中学2022届高三下学期四模数学试题(已下线)第06讲 向量法求空间角(含探索性问题) (高频考点—精讲)-2
名校
8 . 如图,在四棱锥
中,
平面
,
,
,过
的平面与
,
分别交于点
,
,连接
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/ef9522a3-3008-4ed6-b8af-f7879707674c.png?resizew=223)
(1)证明:
.
(2)若
,
,平面
平面
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6be2b61f4a38e2ee2c1a01e00b3ae6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb18c7c5391647214d4da31a88202d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28bb994c172c6e9a318f6bef13d149c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9eeee83b4b7c6ceac7828ff534ce15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/ef9522a3-3008-4ed6-b8af-f7879707674c.png?resizew=223)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe57ea6af8ce746e83919e038bbe2163.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d63f9e9964cdbba091d4d5068a4fc307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e61dcea246d9be228d26796f59443bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f538e1924133b0aa08a003fed45cf2aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af29254fe60a392c249c5791279e9c8.png)
您最近一年使用:0次
2022-10-18更新
|
662次组卷
|
5卷引用:河南省创新发展联盟2022-2023学年高二上学期10月阶段检测数学试题
名校
9 . 如图,四棱锥
的底面
是边长为2的正方形,
,
.
平面
;
(2)若M为棱PD上的点,
,且二面角
的余弦值为
,求直线PC与平面ACM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/63e4d19bf237a6fca67e0d01a9ddb726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328b3eb865249e3f6cd99070624adf50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(2)若M为棱PD上的点,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8676b624f105072a3185911b25c912dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d294d69caac577339f11f477b2047e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
您最近一年使用:0次
2022-05-08更新
|
623次组卷
|
2卷引用:江西省南昌市第十九中学2021-2022学年高二下学期5月复学评估诊断理科数学试卷
解题方法
10 . 如图,在四棱锥P-ABCD中,底面ABCD是一个直角梯形,其中∠BAD=90°,AB∥DC,PA⊥底面ABCD,AB=AD=PA=2,DC=1,点M和点N分别为PA和PC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/27/5946868b-9fdd-4161-8b48-68e56502d54c.png?resizew=141)
(1)证明:直线DM∥平面PBC;
(2)求直线BM和平面BDN所成角的余弦值;
(3)求二面角M-BD-N的正弦值;
(4)求点P到平面DBN的距离;
(5)设点N在平面BDM内的射影为点H,求线段HA的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/27/5946868b-9fdd-4161-8b48-68e56502d54c.png?resizew=141)
(1)证明:直线DM∥平面PBC;
(2)求直线BM和平面BDN所成角的余弦值;
(3)求二面角M-BD-N的正弦值;
(4)求点P到平面DBN的距离;
(5)设点N在平面BDM内的射影为点H,求线段HA的长.
您最近一年使用:0次