名校
解题方法
1 . 如图,在多面体
中,四边形
为直角梯形,
,
,
,
,四边形
为矩形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/d65e1ada-22dd-4985-80ee-4f85890be558.png?resizew=182)
(1)求证:平面
平面
;
(2)线段
上是否存在点
,使得二面角
的大小为
?若存在,确定点
的位置并加以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c162736b719327a2acd7c4d313e1d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ccd20e6f2c8ac1ead51bdf649f005ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/479bb5e937f4fdb1fcbca229e62e0e80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a301e2a62dc7f46992f6f17d88f87a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/941ae54e27bcb5c3909350049f2afd85.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/d65e1ada-22dd-4985-80ee-4f85890be558.png?resizew=182)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bb5012f6c70a1e98d682b6d021fadd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa14a5c8a3c0cbd3a0ab5752957ddc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9303b41310b6bf2a5fe9b66dfcd7fcb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
您最近一年使用:0次
2018-02-16更新
|
397次组卷
|
4卷引用:四川省绵阳市绵阳南山中学实验学校2022-2023学年高三下学期4月月考数学理科试题
四川省绵阳市绵阳南山中学实验学校2022-2023学年高三下学期4月月考数学理科试题山东省烟台市2017-2018学年高二上学期期末考试数学(理)试题(已下线)《2018届优生-百日闯关系列》数学专题三 第一关 以立体几何中探索性问题为背景的解答题广西壮族自治区防城港市2023届高三下学期4月月考数学(理)试题
名校
解题方法
2 . 如图甲是由正方形ABCD,等边
和等边
组成的一个平面图形,其中
,将其沿AB,BC,AC折起得三棱锥P-ABC,如图乙.
平面
;
(2)过棱AC作平面ACM交棱PB于点M,且三棱锥
和
的体积比为1∶2,求直线AM与平面PBC所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6830ebecddbd9759be626289c408e4f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)过棱AC作平面ACM交棱PB于点M,且三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9bad875ab4b5b8c707d452db4cabaa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a8aa80ffd9de106f63a2469e54abcba.png)
您最近一年使用:0次
名校
3 . 如图,直二面角
中,四边形
是边长为2的正方形,
为
上的点,且
平面
,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/29/42c361d7-b0d3-4c6a-9801-e88c9c9a073d.png?resizew=129)
(1)求证:
平面
.
(2)求平面
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d87b527147cb8dbb475bcefc0da2e6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5a50b7c848aa473156eb397bc4d2316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa3c61d6c19e187b4b824b6f5610cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/29/42c361d7-b0d3-4c6a-9801-e88c9c9a073d.png?resizew=129)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efb49d869110f27140f5c1934143db2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
您最近一年使用:0次
名校
4 . 在三棱台
中,
平面
,
,且
,
,
为
的中点,
是
上一点,且
(
).
平面
;
(2)已知
,且直线
与平面
的所成角的正弦值为
时,求平面
与平面
所成夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8783bc74553bf44b61d999a0e4144bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac0b72906641ed13716cfbce50923282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6e4a2df58a236c20df5df0d29a466c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd2e870c95b1ed54b281f93e683578bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](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/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01f14839cf7e3ec6e25b60765ca25b33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d8047f0a8bd0cf4e250cd0fe80093b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a03203dd5ac79dd8c6707e4340773359.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ae300e4ff3e89d0e1e5671eacd9585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a03203dd5ac79dd8c6707e4340773359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f1145c162038df3c7184d9201c628e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc704b98f4ed2c7359a7a5b6498b5290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a03203dd5ac79dd8c6707e4340773359.png)
您最近一年使用:0次
2024-02-17更新
|
1597次组卷
|
4卷引用:四川省绵阳市2023-2024学年高二上学期期末教学质量测试数学试卷
名校
5 . 如图,在四棱锥
中,底面
是正方形,侧棱
底面
,二面角
的大小是
,
分别是
的中点,
交
于点
.
![](https://img.xkw.com/dksih/QBM/2023/12/22/3394612672372736/3394646863216640/STEM/b86a51644a3545a19f66a639dbd586d5.png?resizew=212)
(1)求证:
平面
;
(2)设
是直线
的中点,求直线
与平面
所成角的正弦值.
![](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/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b796bbaeb8450404c2d146283562006e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01882f77f211b5b82111bc2953f01d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/747b8ebe5839aba1c514dd0aa7f18d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a4a6a1e70241d600bc6c104313eac61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2023/12/22/3394612672372736/3394646863216640/STEM/b86a51644a3545a19f66a639dbd586d5.png?resizew=212)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632917e61f4208959686d118c7f19231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05479863cf9f41e2ad9f843ea740a3c0.png)
您最近一年使用:0次
2023-12-22更新
|
442次组卷
|
3卷引用:四川省绵阳市南山中学2023-2024学年高二上学期12月月考数学试题
6 . 如图,已知三棱柱
的体积为
,点
在平面
内的射影落在棱
上,且
.
平面
;
(2)若四边形
的面积为
与
的距离为
,
,求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7870cee007535b979d35bc7feab75616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8054e307c3a5d8a83ee4ee13d41683d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31bda6ddede2ede672a53e57b3ca18e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
您最近一年使用:0次
名校
解题方法
7 . 如图(1)在三角形PCD中,AB为其中位线,且
,若沿AB将三角形PAB折起,使
,构成四棱锥
,如图(2)E和F分别是棱
和
的中点.
平面
;
(2)求平面
与平面
所成的二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15cb4eaeb3a4bbb045ec914daf218c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/458e0536de1347270b853869399975e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d260c4df7b0dc180af6980d21f3371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51838e395dfc9d9ef597d9e01f46272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/840798a31aba0783f96584e0ad7c0d2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3520ee9cc97a075e889e1625dba1157c.png)
您最近一年使用:0次
名校
解题方法
8 . 如图,在四棱锥
中,
为
的中点,
平面
.
;
(2)若
,再从条件①、条件②、条件③这三个条件中选择一个作为已知,使四棱锥
存在且唯一确定.
(i)求证:
平面
;
(ⅱ)设平面
平面
,求二面角
的余弦值.
条件①:
;
条件②:
;
条件③:
.
注:如果选择的条件不符合要求,第(1)问得0分;如果选择多个符合要求的条件分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ca3a13f7b40026800cffd20941532e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac480d8d9d7821b62a603cf5cfda236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4d41989d897ddb0fe7aa59f3beaabf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ee81b6066188abee9d167b6c7f3f71.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a165e7bba48af73da91cc1106ebcfb5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
(i)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(ⅱ)设平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90c23f44504cadf914eb71b7631afdd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/154dcd4885cdbaeffe74c61c82e52ba1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/757b1bff2cbba8ac3cd4304a3b1fe968.png)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/785be2e1b38ecea16cd26a93121feccd.png)
条件②:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafa8c14100a4f847b41b9148954116c.png)
条件③:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d35013640f1f37b9c74ae35803dd0bc.png)
注:如果选择的条件不符合要求,第(1)问得0分;如果选择多个符合要求的条件分别解答,按第一个解答计分.
您最近一年使用:0次
2024-04-09更新
|
1468次组卷
|
5卷引用:四川省绵阳中学2024届高三下学期高考模拟(一)理科数学试题
四川省绵阳中学2024届高三下学期高考模拟(一)理科数学试题北京市海淀区2024届高三下学期期中练习(一模)数学试题(已下线)模块三 专题3 高考新题型专练 专题1 劣构题专练(苏教版)(已下线)模块五 专题5 全真拔高模拟5(苏教版高二期中研习)(已下线)6.4 空间向量与立体几何(高考真题素材之十年高考)2
名校
解题方法
9 . 如图,在三棱柱
中,
与
的距离为
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/22/1f1c13ae-59a8-45dc-ba82-4b67be80d25d.jpg?resizew=199)
(1)证明:平面
平面ABC;
(2)若点N在棱
上,求直线AN与平面
所成角的正弦值的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d76cef03e6b2d02024495a840ab451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fb4b90467311552038a980b52020cf1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/22/1f1c13ae-59a8-45dc-ba82-4b67be80d25d.jpg?resizew=199)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0c892fa3699be6f3b91013c644e773.png)
(2)若点N在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b94e97d085cea077cb82a0b7d2f523e.png)
您最近一年使用:0次
2024-03-15更新
|
2846次组卷
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6卷引用:四川省绵阳南山中学2024届高三下学期高考仿真考试(二)理科数学试题
四川省绵阳南山中学2024届高三下学期高考仿真考试(二)理科数学试题山东省青岛市2024届高三下学期第一次适应性检测数学试题(已下线)第24题 立体几何大题(不易建系)(每日一题)(已下线)第八套 艺体生新高考全真模拟 (一模重组卷)(已下线)数学(九省新高考新结构卷01)甘肃省白银市靖远县第四中学2024届高三下学期模拟预测数学试题
名校
解题方法
10 . 在四棱锥
中,底面
为平行四边形,
,
,
,
,
.
平面
;
(2)
是侧棱
上一点,记
,是否存在实数
,使平面
与平面
所成的二面角为
?若存在,求出
的值;若不存在,请说明理由.
![](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/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e918b70b02a73685e3c536c7f380e2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d327551614874e5e70b98f91b066fad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ae16b72924eb24c45f5dcfab07cc01b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccbd1316b9d1f0c1e71fd078deec61f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aebd46efcc9a37715e4683fd0b7c05de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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