名校
1 . 如图,在长方体
中,
,点E在棱
上运动.
![](https://img.xkw.com/dksih/QBM/2022/1/19/2897861440520192/2899173062377472/STEM/e4d464a5-f1bc-4cfa-9749-41c695b3fb24.png?resizew=183)
(1)证明:
;
(2)当E为棱
的中点时,求直线
与平面
所成角的正弦值;
(3)
等于何值时,二面角
的大小为
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5fe4c0fbef40e7ce6f34da8e2ad6e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2022/1/19/2897861440520192/2899173062377472/STEM/e4d464a5-f1bc-4cfa-9749-41c695b3fb24.png?resizew=183)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3af2fef79a35d44f9e11f9d8c5b3f08b.png)
(2)当E为棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64eb66e4fa5ca4231b8ce2490eeb192b.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14f7c5a38ee674e24a83426a17906532.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a8f3a8b0608ec011ad95c522fd2ea4d.png)
您最近一年使用:0次
2 . 如图,直三棱柱
的底面为直角三角形且
,直角边
、
的长分别为3、4,侧棱
的长为4,点M、N分别为线段
、
的中点.
![](https://img.xkw.com/dksih/QBM/2021/12/21/2877450336092160/2878770239651840/STEM/c3abc82d-9f0c-4eba-9328-e22fb2525a1c.png?resizew=269)
(1)求证:A,C,N,M四点共面;
(2)求直线
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab35850dbc661ded6456b70767cc6cd0.png)
![](https://img.xkw.com/dksih/QBM/2021/12/21/2877450336092160/2878770239651840/STEM/c3abc82d-9f0c-4eba-9328-e22fb2525a1c.png?resizew=269)
(1)求证:A,C,N,M四点共面;
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e22545a765af9563ea7c8db75c16df6.png)
您最近一年使用:0次
名校
3 . 如图所示,在三棱锥
中,
平面
于
点,
.
![](https://img.xkw.com/dksih/QBM/2021/12/16/2873897139503104/2876719251193856/STEM/685104fb-8430-4d99-9121-cb3db90fb68c.png?resizew=215)
(1)求证:
;
(2)若三棱锥
的体积为
,求
与平面
所成角的大小.(结果用反三角函数值表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/116b29749a34291d31d4913d45428e47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a4950a6e4202efd609507964af238b.png)
![](https://img.xkw.com/dksih/QBM/2021/12/16/2873897139503104/2876719251193856/STEM/685104fb-8430-4d99-9121-cb3db90fb68c.png?resizew=215)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c71dbf267939080668be464f1aa60da.png)
(2)若三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/897b77363d75f85216b4e6b72591b55d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
2021-12-20更新
|
427次组卷
|
2卷引用:上海市杨浦区复旦大学附属中学2024届高三下学期3月月考数学试题
名校
4 . 如图1,在
中,
,
,
,
、
分别是
、
上的点,且
,
,将
沿
折起到△
的位置,使
,如图2.
![](https://img.xkw.com/dksih/QBM/2021/12/11/2870077265436672/2871466226425856/STEM/9ac006992149441d8c668bf3ae408a1b.png?resizew=288)
(1)求证:
平面
;
(2)若
是
的中点,求
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95a078495ba47076ccaa28b46f765d80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b5f7197e5bd1afeea4d931307956a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2fef4031c10abc18c8747af6b9a8a.png)
![](https://img.xkw.com/dksih/QBM/2021/12/11/2870077265436672/2871466226425856/STEM/9ac006992149441d8c668bf3ae408a1b.png?resizew=288)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26d8a9d64ad3c8cba28840b41ed7837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce1b066f8869d0ff4513f7a99745125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
您最近一年使用:0次
名校
5 . 如图,在长方体
中,已知
.
上的动点,求三棱锥
的体积;
(2)求直线
与平面
的夹角正弦值大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f9a12befb000adad1ffe56025ba831.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99e77e93fb69b4c0716dde86f52e7406.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
您最近一年使用:0次
2021-11-28更新
|
426次组卷
|
4卷引用:上海市复旦大学附属中学2021-2022学年高二上学期期中数学试题
上海市复旦大学附属中学2021-2022学年高二上学期期中数学试题(已下线)重难点02 几何体的表面积、体积、轴截面、多面体与球体内切外接问题 (重难点突破解题技巧与方法)-2022-2023学年高二数学考试满分全攻略(已下线)11.2锥体(作业)(夯实基础+能力提升)-【教材配套课件+作业】2022-2023学年高二数学精品教学课件(沪教版2020必修第三册)(已下线)专题06 空间直线﹑平面的垂直(一-《知识解读·题型专练》(人教A版2019必修第二册)
6 . 如图,在长方体
中,
,点
为棱
上的动点.
![](https://img.xkw.com/dksih/QBM/2021/9/28/2818040176115712/2824772461953024/STEM/585c1b965eb24e708e043e7a35c7fa1a.png?resizew=175)
(1)求三棱锥
与长方体
的体积比;
(2)若
为棱
的中点,求直线
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf51cd763a64e808abe0f301548f3e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://img.xkw.com/dksih/QBM/2021/9/28/2818040176115712/2824772461953024/STEM/585c1b965eb24e708e043e7a35c7fa1a.png?resizew=175)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5841ecf3472c08cda2bc85ab7a601ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a7bcc1efb8a2ff57d64b6d057da463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9857d5b03bcff4181502765995885383.png)
您最近一年使用:0次
2021-10-08更新
|
217次组卷
|
3卷引用:上海市控江中学2022届高三上学期开学考数学试题
7 . 在正方体
中,
是
的中点.
与
所成的角的大小;
(2)求直线
与平面
所成的角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679748eab882a6be0fefd2cc300349a4.png)
您最近一年使用:0次
2021-09-06更新
|
401次组卷
|
2卷引用:上海市杨浦高级中学2023-2024学年高二上学期期中数学试题
名校
解题方法
8 . 如图所示,在直三棱柱
中,底面是等腰直角三角形,
,
.点
分别是棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/447fd676-fe17-4fc6-8d8d-795f6eb74c2e.png?resizew=180)
(1)求证:
四点共面;
(2)求直线
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed8f7d3d7043d4b1eb98fc5c4e2fcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1604adab63e6350177d8130123dca0f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c18f0e41197ba636c191d6d44646bf5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a521d9fb8b6a4f5d13379e22ef4d05.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/447fd676-fe17-4fc6-8d8d-795f6eb74c2e.png?resizew=180)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b59fa50798a36f632e71c09f5990c565.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39f332eb13e2379aeedb236434947a8f.png)
您最近一年使用:0次
2020-12-26更新
|
623次组卷
|
3卷引用:上海市杨浦区2021届高三上学期一模(期末)数学试题
上海市杨浦区2021届高三上学期一模(期末)数学试题上海市位育中学2020-2021学年高二下学期3月月考数学试题(已下线)课时41 空间直线与平面的位置关系-2022年高考数学一轮复习小题多维练(上海专用)
9 . 如图,正四棱柱
的底面边长
,若异面直线
与
所成角的大小为
,
![](https://img.xkw.com/dksih/QBM/2020/1/31/2389076337876992/2389458579030016/STEM/69607cebd9bd41629f72c0b5f4ee12ea.png?resizew=154)
(1)求
与底面
所成角的正切值;
(2)求正四棱柱
的体积.
![](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/4a696a182fff038a86b2bbe8ca099442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecadd33b0679aa3682db1d20db24fe90.png)
![](https://img.xkw.com/dksih/QBM/2020/1/31/2389076337876992/2389458579030016/STEM/69607cebd9bd41629f72c0b5f4ee12ea.png?resizew=154)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求正四棱柱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
您最近一年使用:0次
2020-02-01更新
|
74次组卷
|
2卷引用:上海市杨浦区2018届高三上学期期中数学试题
10 . 在棱长为
的正方体
,
是棱
的中点,
是侧面
的中心.
(1)求三棱锥
的体积;
(2)求
与底面
所成角的大小(结果可用反三角函数表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7253ffd3fc633d861810ee2e872188b6.png)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ad933da0d2d7a49ef29a7c20cf864b.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
您最近一年使用:0次
2020-01-13更新
|
218次组卷
|
3卷引用:上海市控江中学2021届高三上学期9月月考数学试题