名校
解题方法
1 . 如图,在三棱锥
中,侧面
是等边三角形,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/6/a604ae3d-d01c-4efd-b976-b688e0402730.png?resizew=147)
(1)证明:平面
平面
;
(2)若
,则在棱
上是否存在动点
,使得平面
与平面
的夹角为
?若存在,试确定点
的位置;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4b8c6788bd10b93445b19339114827.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/6/a604ae3d-d01c-4efd-b976-b688e0402730.png?resizew=147)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f393a0ff5f01a41e1f4c9cfd723adeb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2730b513bd3359c3dfe6567e04f5ef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2023-03-04更新
|
1175次组卷
|
5卷引用:山西省运城市康杰中学2022-2023学年高二下学期3月月考数学试题
山西省运城市康杰中学2022-2023学年高二下学期3月月考数学试题山东省临沂市2022-2023学年高二下学期期末数学试题四川省绵阳南山中学2022-2023学年高三下学期三诊理科数学模拟(二)试题山东省泰安第二中学2023-2024学年高二上学期12月月考数学试题(已下线)单元高难问题01探索性问题(各大名校30题专项训练)-【倍速学习法】2023-2024学年高二数学核心知识点与常见题型通关讲解练(人教A版2019选修第一册)
解题方法
2 . 若平面
的一个法向量
,平面
的一个法向量
,则平面
与平面
夹角的余弦值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f79b7e7a61c249c8f5ae5ae59e8462e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e839cdbc52efbfb85af5472bd2b14d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
您最近一年使用:0次
2023-02-16更新
|
274次组卷
|
3卷引用:山西省运城市2022-2023学年高二上学期期末数学试题
山西省运城市2022-2023学年高二上学期期末数学试题山西省吕梁市2022-2023学年高二上学期期末数学试题(已下线)专题05用空间向量研究距离、夹角问题(2个知识点6种题型1个易错点1种高考考法)(1)
3 . 如图,在三棱锥
中,平面
平面
,
,O为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/05da39df-3d0f-4c21-a917-59db0fd72ca1.png?resizew=187)
(1)证明:
;
(2)若
是边长为1的等边三角形,点E在棱
上,
,且二面角
的大小为
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/05da39df-3d0f-4c21-a917-59db0fd72ca1.png?resizew=187)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bb2d945b7908ebac080e6595d4895f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46d76c5ac5c9f0a2ec064487c02c476e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324d453870b345da0c41977290192f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
您最近一年使用:0次
2023-02-03更新
|
350次组卷
|
2卷引用:山西省运城市稷山县稷王中学等3校2023届高三上学期期末数学试题
名校
4 . 如图,在圆柱
中,CE是圆柱的一条母线,ABCD是圆O的内接四边形,AB是圆O的直径,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/21/cbe55526-e380-44f7-a94c-04db8e6d2f05.png?resizew=137)
(1)若
,求证:
平面CEO;
(2)若
,求直线BE与平面ADE所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192f4f9446c954a291f779d963f90257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3402ea855e2ae2dcd98f607bef4fdd6c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/21/cbe55526-e380-44f7-a94c-04db8e6d2f05.png?resizew=137)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12143a06ed24558d8cc7ad39961d3e1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a5edfe97aeab0cf16b40fa9d2e15f9e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba7be04bdcbb90d6b49ce9e14cda9bb.png)
您最近一年使用:0次
5 . 如图,水平面上摆放了两个棱长为
的正四面体
和
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/517b51b4-6e4f-48fb-8018-bf1ed33ee98c.png?resizew=242)
(1)求证:
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6d7e887348f80fda1e157e0222573d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2a009fe059af6b399cb5c49839a0511.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/517b51b4-6e4f-48fb-8018-bf1ed33ee98c.png?resizew=242)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb780dea4bb7d09bf3cb08b7258ebbb1.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44c506e1806d697fff2602f72db1ccd7.png)
您最近一年使用:0次
2023-01-10更新
|
205次组卷
|
3卷引用:山西省运城市2022-2023学年高三上学期期末调研测试数学试题
名校
解题方法
6 . 已知直三棱柱
中,
是
的中点,
为
的中点.点
是
上的动点,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/31a94d6d-66be-4717-bf2a-889a9f2c967d.png?resizew=164)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7c3a03829860d2bdaf84119a91cb7be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/31a94d6d-66be-4717-bf2a-889a9f2c967d.png?resizew=164)
A.无论点![]() ![]() ![]() |
B.当直线![]() ![]() ![]() ![]() |
C.若三棱柱![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
2023-01-10更新
|
724次组卷
|
6卷引用:山西省运城市2022-2023学年高三上学期期末调研测试数学试题
名校
7 . 如图1,在梯形
中,
,
于
,且
,将梯形
沿
折叠成如图2所示的几何体,
,
为直线
上一点,且
于
,
为线段
的中点,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/3eb30231-6257-4781-aa49-b6426b7f4664.png?resizew=359)
(1)证明:
;
(2)若图1中,
,求当四棱锥
的体积最大时,平面
与平面
所成锐角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c897a54f2e36bc4b52fba74b41c89d2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0f0ad2f5858a0d4cec0b204118732ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7471908a0a105f024773d398576a0f2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b62ce0cbffa4758c7a0e6fb7ca4d24e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/3eb30231-6257-4781-aa49-b6426b7f4664.png?resizew=359)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e496f2946a30bfe0264f7512c5c66328.png)
(2)若图1中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164a3cc47e266446d49127e2ef10c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09219dbd440c70d66bf2bf8b4c2bfe2f.png)
您最近一年使用:0次
2022-12-14更新
|
272次组卷
|
3卷引用:山西省运城市稷山县稷山中学2022-2023学年高三上学期12月月考数学试题
8 . 如图,在三棱柱
中,
为
的中点,
为等边三角形,直线
与平面
所成角大小为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/c803964d-228d-49cc-ad12-cff4a2216289.png?resizew=246)
(1)求证:
平面
;
(2)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/986ba572d8373df48c996f8c8611498c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408b3698a4cca4c4fd4396e62542b66a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357265c532428e886a643e8e653eec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d70676406f26d339465fe3473c0c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/c803964d-228d-49cc-ad12-cff4a2216289.png?resizew=246)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db807b09cc550f476b3f8fa0c6a14425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1b489c25405ce48699d4f0a62820bed.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e46fca7d5918b0572984aa3143f182a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2022-12-09更新
|
2912次组卷
|
7卷引用:山西省运城市景胜中学2023届高三上学期12月月考数学试题
山西省运城市景胜中学2023届高三上学期12月月考数学试题湖北省十一校2023届高三上学期12月第一次联考数学试题河南省南阳市2022-2023学年高三第二次大练习数学(理)试题河南省五市2023届高三第一次联考数学(理科)试题2023届四川省名校联考高考仿真测试(五)理科数学试题(已下线)2024年1月普通高等学校招生全国统一考试适应性测试(九省联考)数学试题变式题16-192024届高三新高考改革数学适应性练习(一)(九省联考题型)
名校
解题方法
9 . 如图1,在直角梯形
中,
为
的中点,将
沿
折起,使
,如图2,连接
.
平面
;
(2)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cf14dd26a7f623820cb1df46554bcd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/525d7e6917760988c0ebae76132fd8e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bef835f948e9ab2e57b0f34ec7f05213.png)
您最近一年使用:0次
2022-11-29更新
|
733次组卷
|
5卷引用:山西省高中教育发展联盟2022-2023学年高二上学期11月期中检测数学试题
山西省高中教育发展联盟2022-2023学年高二上学期11月期中检测数学试题辽宁省锦州市渤海大学附属高级中学2022-2023学年高二上学期期末数学试题陕西省西安市蓝田县2022-2023学年高二上学期期末理科数学试题(已下线)第一章 空间向量与立体几何单元测试(基础版)-【冲刺满分】2023-2024学年高二数学重难点突破+分层训练同步精讲练(人教A版2019选择性必修第一册)(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)
名校
解题方法
10 . 如图,平行六面体
中,底面
是菱形,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/3f40e38c-fabb-4af1-8f14-999ffb467e00.png?resizew=212)
(1)求
与
所成角的余弦值;
(2)若空间有一点P满足:
,求点P到直线
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/270fae074028a1e26aef0c732b9eb696.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/3f40e38c-fabb-4af1-8f14-999ffb467e00.png?resizew=212)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
(2)若空间有一点P满足:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65b9c1d486433a39af5b37d338527faa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
您最近一年使用:0次
2022-11-29更新
|
525次组卷
|
3卷引用:山西省高中教育发展联盟2022-2023学年高二上学期11月期中检测数学试题
山西省高中教育发展联盟2022-2023学年高二上学期11月期中检测数学试题辽宁省锦州市渤海大学附属高级中学2022-2023学年高二上学期期末数学试题(已下线)专题09 空间距离与角度8种常见考法归类 - 【考点通关】2023-2024学年高二数学高频考点与解题策略(人教B版2019选择性必修第一册)