名校
解题方法
1 . 如图,正方体
的棱长为2,E为
的中点,点M在
上.
平面
.
的中点;
(2)求直线EM与平面MCD所成角的大小,及点E到平面MCD的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd0285afe567ca0b32f0ccafc30167cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
(2)求直线EM与平面MCD所成角的大小,及点E到平面MCD的距离.
您最近一年使用:0次
2024-06-09更新
|
210次组卷
|
2卷引用:2024届海南省省直辖县级行政单位琼海市高考模拟预测数学试题
名校
解题方法
2 . 如图所示,在长方体
中,
,
在棱
上,且
.
,求平面
截长方体所得截面的面积
(2)若点
满足
,求平面
与
所成夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee52cea67e7d0a82c4b8ed1d9fcd55f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/901c9e0d6c246c195b65100f3f622899.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f74bd823200bb6dfb1c1721345f941ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5bc0580c6c53d00438fcf63bcbc5179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533677cab68214d89c7f2ee1a63650a1.png)
您最近一年使用:0次
2024-03-10更新
|
644次组卷
|
3卷引用:海南省琼海市嘉积中学2023-2024学年高三下学期高中教学第三次大课堂练习数学试题
解题方法
3 . 如图,在长方体
中,
,点
为
的中点,点
是
上靠近
的三等分点,
与
交于点
.
(1)求证:
平面
;
(2)若
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/480f4df0a32a910db7d39695ffd86665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cdc08e1c4a04a18d5ecea03393e36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/6/e50b0c89-8b2e-4a41-a9ab-d3abffa7e1df.png?resizew=180)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280247d7df395bb9ea78c51e67b458d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04731c2f37d21cd66d3f1554c24da16d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ff616a43f18947ab743ee1dcf27854.png)
您最近一年使用:0次
名校
解题方法
4 . 如图,在直三棱柱
中,
,
,D为
的中点.
;
(2)若点
到平面
的距离为
,求平面
与平面
的夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d331850e91390d587ccddcb892f977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ed4b84d38a6c0916bc4ac92f011e8e.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
您最近一年使用:0次
2023-11-10更新
|
1049次组卷
|
5卷引用:海南省琼中黎族苗族自治县琼中中学2024届高三高考全真模拟卷(三)数学试题
解题方法
5 . 如图,
与
都是边长为
的正三角形,平面
平面
,
平面
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/6527f062-9a12-4c89-b226-d4d2c67b814d.png?resizew=136)
(1)证明:
平面
.
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/781e6927e3bc512359dc8b0c11e195d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c72b92177ddfe056e6f90af4f37e64d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ddad21a6de8f54e65123d274c0098c8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/5/6527f062-9a12-4c89-b226-d4d2c67b814d.png?resizew=136)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fdb2b9d6a4a54ed1328c5b3adcf7b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f35614aff055b98b76ca262f64e629d.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,四棱锥
中,底面ABCD为平行四边形,
面ABCD,
,
.
(2)求二面角
的正弦值.
![](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/bafa8c14100a4f847b41b9148954116c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf4941bc1ba8d622e17e455f0a857341.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780e6163118b7259daabd994d674761d.png)
您最近一年使用:0次
2023-02-09更新
|
471次组卷
|
3卷引用:海南省屯昌县2023届高三二模统考(A)数学试题
名校
解题方法
7 . 正三棱台
中,
,
分别是
和
的中心,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbcdaa9492b12bf8863b1435d6f8237.png)
A.直线![]() ![]() ![]() |
B.平面![]() ![]() ![]() |
C.正三棱台![]() ![]() |
D.四棱锥![]() ![]() ![]() |
您最近一年使用:0次
2023-01-02更新
|
552次组卷
|
4卷引用:海南省昌江县部分学校2023届高三二模数学试题
名校
8 . 在如图所示的几何体中,四边形
是正方形,四边形
是梯形,
,
,平面
平面
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/f6d970a9-8715-4778-9b62-2c4d323ec81c.png?resizew=170)
(1)求证:
平面
;
(2)求二面角
的大小;
(3)已知点
在棱
上,且异面直线
与
所成角的余弦值为
,求点A到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7bce6eba5d07a34f24c5370c580ac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/133659fd88416259e3b99eaf5751b98d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a713da89c106face0387c44b9c62ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c032261d2f887de100ed40e8fc676e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ea2d880b20542c2d813f95c683403e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/f6d970a9-8715-4778-9b62-2c4d323ec81c.png?resizew=170)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7bcd16691fdd6c2f280ed20a72f2cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e738d31d5d2d20134ed862d404f3fb5d.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7246b49f9c9b524db7a8929133cb4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83b7679d26c1041b17e43100775ebc2a.png)
您最近一年使用:0次
2022-06-01更新
|
1326次组卷
|
4卷引用:海南省昌江县部分学校2023届高三二模数学试题
海南省昌江县部分学校2023届高三二模数学试题天津市滨海新区塘沽第一中学2022届高三下学期高考模拟数学试题天津外国语大学附属外国语学校2022-2023学年高三上学期第二次月考数学试题(已下线)专题8-2 立体几何中的角和距离问题(含探索性问题)-2
名校
解题方法
9 . 如图,四棱锥P-ABCD的底面为梯形,
底面ABCD,
,
,
,E为PA的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/c4d7cea7-efc3-4bc2-a2d6-6951675003dd.png?resizew=207)
(1)证明:平面
平面BCE;
(2)若二面角P-BC-E的余弦值为
,求三棱锥P-BCE的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c04230d9ddfa812c84339856d598f49c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5679a74e9f5506266ab627894ab03243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/c4d7cea7-efc3-4bc2-a2d6-6951675003dd.png?resizew=207)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04c222223dae9ef27d4c132534d9848.png)
(2)若二面角P-BC-E的余弦值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b2215de6d4986954c95a5b711fd05aa.png)
您最近一年使用:0次
2022-02-22更新
|
2271次组卷
|
9卷引用:海南省海南华侨中学2022届高三下学期第五次模拟数学试题
解题方法
10 . 如图,在四棱锥
中,平面
平面
,且
是边长为
的等边三角形,四边形
是矩形,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2021/12/3/2864681365897216/2872224254173184/STEM/3fb8293410374121b1a4ae865a8a15ce.png?resizew=230)
(1)求二面角
的大小;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ac2e11788860424508ea9e80cf89d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2021/12/3/2864681365897216/2872224254173184/STEM/3fb8293410374121b1a4ae865a8a15ce.png?resizew=230)
(1)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6be1d612670b8f2f4315f9c222aebd41.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faa23fa14f624ad8212bda55d321362f.png)
您最近一年使用:0次
2021-12-14更新
|
396次组卷
|
2卷引用:海南省2022届高三高考数学仿真卷数学试题