名校
解题方法
1 . 已知正四面体
的棱长为2,
、
分别是
和
的中点,下列说法正确的是( )
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
A.直线![]() ![]() |
B.线段![]() ![]() |
C.直线![]() ![]() ![]() |
D.正四面体![]() ![]() |
您最近一年使用:0次
2023-02-16更新
|
668次组卷
|
6卷引用:四川省眉山市仁寿第一中学校南校区2023-2024学年高二上学期第一次质量检测数学试题
四川省眉山市仁寿第一中学校南校区2023-2024学年高二上学期第一次质量检测数学试题贵州省六盘水市2022-2023学年高二上学期期末教学质量监测数学试题甘肃省庆阳第二中学2022-2023学年高二下学期第一次月考数学试题(已下线)1.1.2 空间向量的数量积运算(AB分层训练)-【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)广东省揭阳市普宁国贤学校2023届高三下学期3月摸底数学试题(已下线)第七章 应用空间向量解立体几何问题拓展 专题一 空间向量基底法 微点2 空间向量基底法(二)【基础版】
2 . 如图,正三棱柱 (底面是正三角形的直棱柱的底面边长为
,侧棱长为
,则
与侧面
所成角的正弦值为
您最近一年使用:0次
2023-02-14更新
|
476次组卷
|
3卷引用:四川省资阳市2022-2023学年高二下学期入学检测(上学期期末质量监测)理科数学试题
四川省资阳市2022-2023学年高二下学期入学检测(上学期期末质量监测)理科数学试题四川省资阳市2022-2023学年高二上学期期末理科数学试题(已下线)第四章 立体几何解题通法 专题四 投影变换法 微点2 投影变换法(二)【培优版】
3 . 如图,正方形
和直角梯形
所在的平面互相垂直,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/91c9a761-f737-4cf5-930b-2e91895f6ffd.png?resizew=167)
(1)求证:
平面
;
(2)求直线
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4b93d7abcfc4c3df48f03aa969c17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5dabec303b8f0af1fca7eeac041d70e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560439a9b6c535ff5037c950283371cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/91c9a761-f737-4cf5-930b-2e91895f6ffd.png?resizew=167)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662698361c6b3ddaf0c28a3c87be53e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
您最近一年使用:0次
名校
解题方法
4 . 在长方体
中,
,
,则
与平面
所成角的正弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1f9660760804ff01bbc9319b7342191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbafedc202bd0d86c4dfdece9f8f4fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9539f8fb13345b449274b67bbda995db.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-01-09更新
|
617次组卷
|
7卷引用:四川省达州市万源中学2022-2023学年高二下学期入学考试数学(理科)试题
四川省达州市万源中学2022-2023学年高二下学期入学考试数学(理科)试题宁夏青铜峡市宁朔中学2022-2023学年高二上学期线上期末考试数学(理)试题(已下线)8.6.2直线与平面垂直的判定定理(第1课时)(精讲)(2)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)(已下线)第八章立体几何初步章末题型大总结(精讲)(2)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)(已下线)专题8.11 空间直线、平面的垂直(一)(重难点题型精讲)-2022-2023学年高一数学举一反三系列(人教A版2019必修第二册)(已下线)专题10 空间角与空间距离的综合(2) - 期中期末考点大串讲(已下线)专题强化二:异面角、线面角、二面角的常见解法 (2)
名校
5 . 如图所示,在三棱柱
中,
是等边三角形,
平面
,
,
,
,
分别是
,
,
的中点,则直线
与
所成角的余弦值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/97971c26-def6-42af-85b1-6ba03d54046a.png?resizew=140)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4339a40ae9d1947ec3a4b3e2fa3a16cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/97971c26-def6-42af-85b1-6ba03d54046a.png?resizew=140)
A.![]() | B.![]() | C.![]() | D.0 |
您最近一年使用:0次
2023-01-04更新
|
369次组卷
|
4卷引用:四川省内江市资中县第二中学2022-2023学年高二下学期入学考试数学(理)试题
6 . 如图,已知六棱锥
的底面是正六边形,
平面
,
,给出下列结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/25e5ed55-bdc3-438a-8f88-2061dea26c12.png?resizew=235)
①
;
②直线
平面
;
③平面
平面
;
④直线
与平面
所成角为
;
其中正确的有_______ (把所有正确的序号都填上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3b7838a53d0b3ed4565fb6a890f365d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9801cabc43c024b9c5fac34b7db5d69b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/25e5ed55-bdc3-438a-8f88-2061dea26c12.png?resizew=235)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9104a1941e557a85fd1496bc2b9be297.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f8b463fcecf0a757f386db56e074d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e6c2dad46a9052a4185a4f7b4ae8a2e.png)
③平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e6c2dad46a9052a4185a4f7b4ae8a2e.png)
④直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
其中正确的有
您最近一年使用:0次
名校
7 . 如图①,在平面多边形ABCDE中,
,
为等腰直角三角形,四边形ABCD为等腰梯形,且
,沿AD将
折起,使得
,M为BC的中点,连接AM,BD,如图②.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/0e646831-934c-44b8-a6d4-a844e88e8916.png?resizew=414)
(1)证明:
;
(2)求直线DE与平面BEM所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7624907b562e102da1fdbb10bc43895.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783a833992e0862211a15fec2d3e3dda.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/0e646831-934c-44b8-a6d4-a844e88e8916.png?resizew=414)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e309053297619d3b46fcec970b68509.png)
(2)求直线DE与平面BEM所成角的正弦值.
您最近一年使用:0次
2022-12-03更新
|
459次组卷
|
3卷引用:四川省泸县第四中学2023-2024学年高二上学期10月月考数学试题
名校
8 . 已知正方体
,则不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
A.直线![]() ![]() ![]() |
B.直线![]() ![]() ![]() |
C.直线![]() ![]() ![]() |
D.直线![]() ![]() |
您最近一年使用:0次
2022-12-02更新
|
238次组卷
|
3卷引用:四川省眉山市彭山区第一中学2022-2023学年高二上学期第二次月考数学(理)试题
名校
9 . 如图,已知
平面
,
,
,
,
,
,点
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/30bb197b-4a4d-405f-9b56-b2121a8477f6.png?resizew=134)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa742d9b84b537be10034553776400e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e4f0c1c9cca0555906d8a53e1a6803d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/133760237c0ccf2d6a83786925b6d23c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ab527e1b5f124429b532804ef3f870f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4eaac4ba87386eca79a4f8b5d99ec38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/30bb197b-4a4d-405f-9b56-b2121a8477f6.png?resizew=134)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb7f072f0834ebdf155abc5dcc9c8d99.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb7f072f0834ebdf155abc5dcc9c8d99.png)
您最近一年使用:0次
2022-11-25更新
|
566次组卷
|
3卷引用:四川省泸州市龙马高中2022-2023学年高二上学期第二次月考数学(理)试题
10 . 如图,在三棱锥
中,
,点
分别是
的中点,
底面
.
![](https://img.xkw.com/dksih/QBM/2022/11/20/3113866250829824/3116714997489664/STEM/42dedfbcbb0843afa4fec997d3629d98.png?resizew=187)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3458ac2f57ca59ad8052807621cf0ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe964aa3574061970c9c8066df21c89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76d097f3d2a6cf2c76b1e3f41dfe7fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc6f007dbf1c1a36eb031e520608403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/2022/11/20/3113866250829824/3116714997489664/STEM/42dedfbcbb0843afa4fec997d3629d98.png?resizew=187)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377ca47ae9b5ea2a870b6c0b12cfa010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2022-11-24更新
|
127次组卷
|
2卷引用:四川省安岳县石羊中学2022-2023学年高二上学期期中检测数学理科试题