名校
解题方法
1 . 如图,直三棱柱
中,
,
,
为棱
的中点,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/0172169d-f235-45b1-a954-0abc644c512b.png?resizew=162)
(1)证明:
平面
;
(2)求直线
与平面
所成角的正弦值;
(3)棱
上是否存在点
,使得点
在平面
内?若存在,求
的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/483678f653daf513747f27f3dd6acf04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92105835f8075cb75dff244e908370b5.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/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/0172169d-f235-45b1-a954-0abc644c512b.png?resizew=162)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e06947327f4c41340b8713e8a6b4c87.png)
(3)棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e06947327f4c41340b8713e8a6b4c87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbda5eb3f3becbc98276be833ccbe29f.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,四棱锥
中,
平面
,底面四边形
为矩形,
,
,
,
为
中点,
为
靠近
的四等分点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/f467b04d-eabd-44d2-9112-c42d9e9ffc85.png?resizew=177)
(1)求证:
平面
;
(2)求二面角
的余弦值:
(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/5a1b49f64e0065edad868b25e9fcada3.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/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fcac3b256b269b824d8738bb081f8ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/f467b04d-eabd-44d2-9112-c42d9e9ffc85.png?resizew=177)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1885efcff0b903e314057dd153578600.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4bf20b186fdaae7736a1d99a7f919.png)
(3)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1885efcff0b903e314057dd153578600.png)
您最近一年使用:0次
名校
解题方法
3 . 正方体
中,
分别为棱
和
的中点,则直线
和
所成角的余弦值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
您最近一年使用:0次
2022-11-02更新
|
320次组卷
|
2卷引用:北京市北京师范大学附属实验中学2022-2023学年高二上学期期中考试数学试题
解题方法
4 . 如图,在直三棱柱
中,
,
,
,点
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/3a0062b5-08b1-4ed7-b154-f409b7789537.png?resizew=217)
(1)求点
到平面
的距离;
(2)求异面直线
与
所成角的余弦值;
(3)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e9ef3e849788645552cfb0735d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/3a0062b5-08b1-4ed7-b154-f409b7789537.png?resizew=217)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba9e20d667d04bf3ee7f55cc795ce01.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ecad355286188fd317939fa50f9555.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba9e20d667d04bf3ee7f55cc795ce01.png)
您最近一年使用:0次
解题方法
5 . 平面
的一个法向量
,平面
的一个法向量
,则平面
、平面
夹角的余弦值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d7a83e2768d8d81329cdc6a433f6868.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29800838d10a900abe5d9c3ea25611bd.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
解题方法
6 . 在三棱锥
中,各个棱长都相等,
,
分别是
,
的中点,则异面直线
与
所成角的余弦值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
您最近一年使用:0次
2022-11-02更新
|
112次组卷
|
2卷引用:北京市朝阳区中央美术学院附属实验学校2022-2023学年高二上学期期中检测数学试题
7 . 在如图所示的五面体ABCDFE中,底面ABCD是边长为2的正方形,
平面ABCD,
,且
,N为BE的中点,M为CD中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/745f4ef6-1fd1-44d4-8b28-72346a955856.png?resizew=166)
(1)求证:
平面ABCD;
(2)求:二面角
的余弦值;
(3)若:线段EC的中点为H,试判断点H是否在平面NMF内?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80637f43cf748a2ce0aaf4cd0037749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eba49c4f6fd70a72785074a7e2d974c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94ad949a90fc75bd445e02a1909b0ec5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/745f4ef6-1fd1-44d4-8b28-72346a955856.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d82d5d2beb3dd78baa40ae99a0d7c53.png)
(2)求:二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e98257fbde2d7429c311fc0c79c04b60.png)
(3)若:线段EC的中点为H,试判断点H是否在平面NMF内?并说明理由.
您最近一年使用:0次
8 . 如图,已知正方形
和矩形
所在的平面互相垂直,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/a8199f2e-f368-47fe-9dc0-04ed2632fff9.png?resizew=246)
(1)求证:
面
;
(2)求:直线
与面
所成角的正弦值;
(3)在线段
上是否存在点M,使得
平面
,若存在,求
的值.若不存在,说明理由.
![](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/88bbe27b490fd189e3e56517ba791f27.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/a8199f2e-f368-47fe-9dc0-04ed2632fff9.png?resizew=246)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c0a8dae112675431078b896e724c3cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4b93d7abcfc4c3df48f03aa969c17f.png)
(2)求:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9efe66d99f813c6b1387392186822bb.png)
(3)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1337ec0af72822be72c4bb4926a4e642.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27fb1ba55d814904c84d5581edf3a1b.png)
您最近一年使用:0次
解题方法
9 . 已知二面角
为
,A,B是棱l上的两点,AC,BD分别在半平面
内,
,且
,设:
.
![](https://img.xkw.com/dksih/QBM/2022/10/21/3092288579117056/3093033655230464/STEM/5e9f75a3fedb47d98fb84bcb3919adba.png?resizew=179)
(1)试用
表示
,并求线段CD的长;
(2)求:异面直线CD与BA所夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ae7ffcffdc546f921b1cab02d629ce1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7435836899f6cd9fd01d84568b02239e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/775420da1988d2bcb0e05a2cfd385db4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a7036f26e08cb8354b9c2c9dcca872c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c97661b6b212ecede3a0a26441e19d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/672e0559698e2c92a22ab1930eaa0e3d.png)
![](https://img.xkw.com/dksih/QBM/2022/10/21/3092288579117056/3093033655230464/STEM/5e9f75a3fedb47d98fb84bcb3919adba.png?resizew=179)
(1)试用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e2b694fa1584587e4f1ba3bbc26eae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a1a69d7460d12d4facd43e0d941190.png)
(2)求:异面直线CD与BA所夹角的余弦值.
您最近一年使用:0次
名校
解题方法
10 . 如图已知三棱锥
的侧棱
,
,
两两垂直,且
,
,点
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/a8f6cef3-655d-4cec-a1ed-62ab4ae99968.png?resizew=157)
(1)求直线
与平面
所成角的正弦值;
(2)求点
到平面
的距离;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1262ec403745d82befa99d4c6c2ae35b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2057edff5cd4864dc53c3b52805ba117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3fa30632a2492bff45629c6613c874c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/a8f6cef3-655d-4cec-a1ed-62ab4ae99968.png?resizew=157)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2022-10-22更新
|
399次组卷
|
3卷引用:北京市首都师范大学附属密云中学2022-2023学年高二上学期阶段性练习数学试题