名校
1 . 如图,在四棱锥
中,底面
是矩形,侧棱
底面
,点E是
的中点,
.
(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/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671af0b3a53e6f3d308f4ca9cef47ee9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/13/82b4ea47-0511-4081-8710-eb9748fd3e7c.png?resizew=170)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30067b7b236d17af8a462f96a58d11bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
2023-09-29更新
|
499次组卷
|
5卷引用:天津市武清区南蔡村中学2022-2023学年高二上学期10月月考数学试题
解题方法
2 . 如图,在棱长是2的正方体
中,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/15/b7058723-e429-4b49-8d2d-6ff90a45309b.png?resizew=177)
(1)求证:
;
(2)求异面直线
与
所成角的余弦值;
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/15/b7058723-e429-4b49-8d2d-6ff90a45309b.png?resizew=177)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c82199be341703d72cff4a4635b558.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dc61d5de97b5a40be925b278ae494c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
您最近一年使用:0次
名校
3 . 如图,在四棱柱
中,
平面
,底面
满足
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/7/60eb7f6d-9bb7-429b-b849-fb50dd068839.png?resizew=234)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.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/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a90f33e4b2b780d50eabf0c9714a3a6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/7/60eb7f6d-9bb7-429b-b849-fb50dd068839.png?resizew=234)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/debdc6632a4877e5131d3da25cda8b89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0a582c36d62d83c16425b2f54b4354.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0a582c36d62d83c16425b2f54b4354.png)
您最近一年使用:0次
2022-09-06更新
|
1532次组卷
|
4卷引用:天津市武清区杨村第一中学2022-2023学年高二上学期第一次阶段性检测数学试题
天津市武清区杨村第一中学2022-2023学年高二上学期第一次阶段性检测数学试题(已下线)第04讲 空间向量在立体几何中的应用(练,理科专用)辽宁省六校协作体2022-2023学年高二上学期期中数学试题浙江省湖州市吴兴高级中学2021-2022学年高二上学期10月阶段性测试数学试题
名校
4 . 已知正四棱柱
中,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/3/1df3add3-f544-4a3c-8e63-a9eace6d4cbf.png?resizew=150)
(1)求证:
;
(2)求二面角
的余弦值;
(3)在线段
上是否存在点
,使得平面
平面
,若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66111d87f500aea4aeccb73b0ce7841a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/3/1df3add3-f544-4a3c-8e63-a9eace6d4cbf.png?resizew=150)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417104247ce266ae42c3a9860f387272.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82dea8dd46bcd7473ad04381b4e6d9d3.png)
(3)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc492b4bf027e8eeba9c08ecebb50f4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfa70b6554a9c50365435afc5742193c.png)
您最近一年使用:0次
2022-09-03更新
|
1334次组卷
|
5卷引用:天津市武清区四校2022-2023学年高二上学期第一次阶段性练习数学试题
名校
解题方法
5 . 在棱长均等的正三棱柱
中,直线
与
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-08-22更新
|
1149次组卷
|
7卷引用:天津市武清区杨村第一中学2022-2023学年高二上学期第一次阶段性检测数学试题
名校
6 . 如图,
平面
,
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/881fafeb-0627-4531-b84f-6b889496ce4a.png?resizew=198)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值;
(3)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883200c4d4e82a5411064a644aabfe33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0ca2e3660659b7ecbb96f80c0539f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88dac2c17c765517c2163ab43bbe1038.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/881fafeb-0627-4531-b84f-6b889496ce4a.png?resizew=198)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4d888c0b616792a2c41ff180de99fbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(3)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
您最近一年使用:0次
2022-06-01更新
|
1199次组卷
|
8卷引用:天津市武清区杨村第一中学2022届高三下学期高考第一次热身练数学试题
天津市武清区杨村第一中学2022届高三下学期高考第一次热身练数学试题(已下线)2022年高考天津数学高考真题变式题7-9题天津市南开中学2023届高三上学期统练2数学试题(已下线)2022年高考天津数学高考真题变式题16-18题天津市南仓中学2022-2023学年高三上学期第一次教学质量过程性监测与诊断数学试题天津市第二十五中学2022-2023学年高三上学期期末数学试题天津外国语大学附属外国语学校2023届高三上学期10月月考数学试题天津市第二南开学校2022-2023学年高三下学期开学学情调查数学试题
名校
解题方法
7 . 如图,在棱长为1的正方体
中,
是棱
的中点,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/26/2987806767505408/2991275603574784/STEM/21797cb2-0fed-4e0f-9137-9a0801097d28.png?resizew=168)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc725182c2fd1413319fea35b95c7dc.png)
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
(2)求直线
和平面
所成的角的正弦值.
(3)求平面
与平面
夹角的余弦值.
![](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/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://img.xkw.com/dksih/QBM/2022/5/26/2987806767505408/2991275603574784/STEM/21797cb2-0fed-4e0f-9137-9a0801097d28.png?resizew=168)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc725182c2fd1413319fea35b95c7dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d365ce9f4bacc4d4bb15dbdb5306a5.png)
(3)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d365ce9f4bacc4d4bb15dbdb5306a5.png)
您最近一年使用:0次
2022-05-31更新
|
970次组卷
|
7卷引用:天津市武清区四校2022-2023学年高二上学期第一次阶段性练习数学试题
名校
8 . 如图,
平面
,
,
,
,
,点
,
,
分别为
,
,
的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/23/2985654234750976/2986405298561024/STEM/a3767649-d9c9-46f8-bcd4-dba30bae8973.png?resizew=160)
(1)求证:
平面
;
(2)求平面
与平面
夹角的大小;
(3)若
为线段
上的点,且直线
与平面
所成的角为
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0657604c530cc1e6d741e4f3e8efa169.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdf7ab831f4d2053cbd4a6d63ad7ac5d.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://img.xkw.com/dksih/QBM/2022/5/23/2985654234750976/2986405298561024/STEM/a3767649-d9c9-46f8-bcd4-dba30bae8973.png?resizew=160)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a5a17b1dcdb86b84c3712527282d7e.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/594866fa5b61e44b4364f69f0fd2fba6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a5a17b1dcdb86b84c3712527282d7e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/594866fa5b61e44b4364f69f0fd2fba6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce2790947716b1cfa9c5e7a65db4093.png)
您最近一年使用:0次
2022-05-24更新
|
984次组卷
|
5卷引用:天津市环城七校联考2022届高三下学期第二次质量调查数学试题
天津市环城七校联考2022届高三下学期第二次质量调查数学试题(已下线)2022年高考天津数学高考真题变式题7-9题(已下线)2022年高考天津数学高考真题变式题16-18题(已下线)专题15 立体几何(模拟练)-2天津市实验中学2022-2023学年高三上学期第二阶段学习质量检测数学试题
名校
解题方法
9 . 已知:在四棱锥
中,底面
为正方形,侧棱
平面
,点
为
中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/a9eb9933-e61b-4857-9e72-12726b5b449a.png?resizew=178)
(1)求证:平面
平面
;
(2)求直线
与平面
所成角大小;
(3)求点
到平面
的距离.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbe8961cca9440ea334ee049d109146.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/a9eb9933-e61b-4857-9e72-12726b5b449a.png?resizew=178)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9332d230f25309248ff2a6161f060229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(3)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb304d905125170bebfada27e7ed8960.png)
您最近一年使用:0次
2022-03-15更新
|
786次组卷
|
4卷引用:天津市武清区四校2022-2023学年高二上学期第一次阶段性练习数学试题
名校
解题方法
10 . 已知在四棱锥
中,底面
是边长为4的正方形,
是正三角形,平面
平面
,
,
,
分别是
,
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/714642b0-cde5-4f0e-8765-ab15425fb66b.jpg?resizew=163)
(1)求平面
与平面
的夹角的大小;
(2)线段
上是否存在一个动点
(与线段的端点不重合),使得直线
与平面
所成角的正弦值为
,若存在,求线段
的长度,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/55a675310c8ba418e5a59beb7317e21e.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/2a30f3a8b673cc28bd90c50cf1a35281.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/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/714642b0-cde5-4f0e-8765-ab15425fb66b.jpg?resizew=163)
(1)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)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/8e9e953a4a5f98c96bbe67cbaadf76d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f75c42c77264076166fff76cfab4ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
您最近一年使用:0次
2020-12-15更新
|
351次组卷
|
3卷引用:天津市武清区杨村第一中学2022-2023学年高二上学期第一次阶段性检测数学试题