名校
解题方法
1 . 如图,在三棱锥
中,平面
平面
,
,
为
的中点,
是边长为1的等边三角形,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/6c4966d2-fbe2-48b3-ae39-61bc45cbbe52.png?resizew=219)
(1)证明:
;
(2)求直线
和平面
所成角的正弦值;
(3)在棱
上是否存在点
,使二面角
的大小为
?若存在,并求出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0482d12694d419694ecab90485ab70f8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/6c4966d2-fbe2-48b3-ae39-61bc45cbbe52.png?resizew=219)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21be01a95cdd3149512bf95d6084fdd6.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(3)在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324d453870b345da0c41977290192f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a50b31b40c0d28bed4572ce27b30a19.png)
您最近一年使用:0次
2022-11-08更新
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1488次组卷
|
3卷引用:天津市宁河区芦台第一中学2022-2023学年高二上学期期中考前统练数学试题
名校
解题方法
2 . 如图①所示,长方形
中,
,
,点
是边
靠近点
的三等分点,将△
沿
翻折到△
,连接
,
,得到图②的四棱锥
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/064d0cf4-2a78-4aef-b517-bb802a20d845.png?resizew=305)
(1)求四棱锥
的体积的最大值;
(2)设
的大小为
,若
,求平面
和平面
夹角余弦值的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ddb7c2ca1b6bee86cb24fed02e40da2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c745df4f226027778d5fe45b6501b822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec53c9cc69c2e3943ec8df5d5b5d44c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/064d0cf4-2a78-4aef-b517-bb802a20d845.png?resizew=305)
(1)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec53c9cc69c2e3943ec8df5d5b5d44c7.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212e8c352c4d9b022a057d7d7fa7dd14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b67c89ceb040588c165ad7a8030906c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c745df4f226027778d5fe45b6501b822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2022-11-08更新
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1901次组卷
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9卷引用:重庆市外国语学校(四川外国语大学附属外国语学校)2022-2023学年高二上学期期中数学试题
重庆市外国语学校(四川外国语大学附属外国语学校)2022-2023学年高二上学期期中数学试题3.4向量在立体几何中的应用 测试卷-2022-2023学年高二上学期数学北师大版(2019)选择性必修第一册吉林省长春市长春吉大附中实验学校2022-2023学年高三上学期第五次摸底考试数学试题河北省保定市重点高中2022-2023学年高三上学期11月期中数学试题(已下线)第11讲 第一章 空间向量与立体几何 章末题型大总结(2)(已下线)模块十一 立体几何-2(已下线)模块四 专题6 立体几何黑龙江省哈尔滨市第九中学校2024届高三上学期12月月考数学试题福建省龙岩市上杭县第一中学2024届高三上学期12月月考数学试题
名校
3 . 如图,在棱长为
的正方体
中,点
是平面
内一个动点,且满足
,则下列正确的是( )(参考数据:
,
)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/3a2d054a-503f-42e6-ae95-55d2046fb511.png?resizew=146)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbd3e8cf8325999cde03adf845d3dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9539f8fb13345b449274b67bbda995db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b84127f0c8f4cadd4012bc7914b6a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/043e9f96aaf6c5d17d1342e216a6a06e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d28a16615efc6b975de846bd82e4dc43.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/3a2d054a-503f-42e6-ae95-55d2046fb511.png?resizew=146)
A.![]() |
B.直线![]() ![]() ![]() |
C.点![]() |
D.设直线![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
4 . 在正方体
中,
分别为
,
的中点,
为
侧面的中心,则异面直线
与
所成角的正弦值为( )
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19428edbb520c8ad2f1a7f63dc805eb1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-11-08更新
|
403次组卷
|
3卷引用:重庆市外国语学校(四川外国语大学附属外国语学校)2022-2023学年高二上学期期中数学试题
名校
5 . 在梯形
中,
,
,
,P为AB的中点,线段AC与DP交于O点(如图1).将
沿AC折起到
位置,使得平面
平面
(如图2).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/7f4fd035-e109-4774-8bba-06663dbfbeae.png?resizew=495)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
平面
;
(2)求二面角
的大小;
(3)线段
上是否存在点Q,使得CQ与平面
所成角的正弦值为
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bbaccd578a43b2397c8bdd50592fa07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89ee6576c35c682bcb0eff43bd958d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6829c6214e60edbfbf1e31601c6bcb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb3c5eea67eecdd13a2e6cd60d1d67e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efb49d869110f27140f5c1934143db2e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/7f4fd035-e109-4774-8bba-06663dbfbeae.png?resizew=495)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bde275553b4e49f5adffe606875c6ec3.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845b65a3d273b6792d63f3d925cd4bc0.png)
(3)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be451ce5fad246389ccf4864929d81d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e95fa1c3bcd3d0464fcadf248e90ace.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80dbac2006d30c49943f0241fd976eb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b188172a322d69106c638e1603ac13f.png)
您最近一年使用:0次
2022-11-08更新
|
557次组卷
|
6卷引用:北京市第五十七中学2021-2022学年高二上学期期末数学试题
北京市第五十七中学2021-2022学年高二上学期期末数学试题北京市朝阳区清华大学附属中学朝阳学校2022-2023学年高二上学期期中考试数学试题广东省广州市第十六中学2022-2023学年高二上学期期中数学试题上海市青浦高级中学2022-2023学年高二上学期12月质量检测数学试题(已下线)第03讲 空间向量的应用-【帮课堂】2021-2022学年高二数学同步精品讲义(苏教版2019选择性必修第二册)广东省广州市第五中学2023-2024学年高二上学期期中数学试题
解题方法
6 . 如图,在四棱锥
中,平面
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
,
,
,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/735bd628-ab6f-4d1f-bdaa-18f22663dc04.png?resizew=190)
(1)求直线
与平面
所成角的正弦值;
(2)在线段
上,是否存在一点
,使得平面
平面
?如果存在,求此时
的值;如果不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/877582b5387278008d14fe5932622fe7.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/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b72a4d999231f9af00770510203084b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/735bd628-ab6f-4d1f-bdaa-18f22663dc04.png?resizew=190)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4db9b82b67efe45a02fca32bfcf5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef796b46e68fe77b117ff0483d2370c.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/defa5b53043ae802bb1af7d14374406d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9332d230f25309248ff2a6161f060229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef796b46e68fe77b117ff0483d2370c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b1715e43d4ca66f32ac9b56fe426fc.png)
您最近一年使用:0次
名校
解题方法
7 . 如图,在棱长为1的正四面体(四个面都是正三角形)ABCD中,M,N分别为BC,AD的中点,则直线AM和CN夹角的余弦值为( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-11-08更新
|
770次组卷
|
6卷引用:北京市中国人民大学附属中学2022-2023学年高二上学期期中练习数学试题
北京市中国人民大学附属中学2022-2023学年高二上学期期中练习数学试题河南市郑州优胜实验中学2022-2023学年高二上学期10月第一次月考数学试题山东省临沂市第十九中学2022-2023学年高二上学期期末数学试题(已下线)1.1.2 空间向量的数量积运算 精讲(4大题型)-【题型分类归纳】2023-2024学年高二数学同步讲与练(人教A版2019选择性必修第一册)福建省厦门市杏南中学2023-2024学年高二上学期第一阶段测试数学试题(已下线)湖北省“荆、荆、襄、宜四地七校”考试联盟2023-2024学年高二下学期期中联考数学试卷变式题6-10
名校
解题方法
8 . 有很多立体图形都体现了数学的对称美,其中半正多面体是由两种成两种以上的正多边形围成的多面体,半正多面体因其最早由阿基米德研究发现,故也被称作阿基米德体.如图,这是一个棱数为24,棱长为
的半正多面体,它的所有顶点都在同一个正方体的表面上,可以看成是由一个正方体截去八个一样的四面体所得,这个正多面体的表面积为___________ .若点E为线段BC上的动点,则直线DE与直线AF所成角的余弦值的取值范围为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/74a37607-8079-49f3-a2e3-0aa55bdef315.png?resizew=183)
您最近一年使用:0次
名校
解题方法
9 . 如图,四棱锥
中,
平面
,
,
,
,
,
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/3c5a3189-f7f9-454d-ac6d-e44f48bfcc8a.png?resizew=144)
(1)证明:
平面
;
(2)若二面角
的余弦值是
,求
的值及
到平面
的距离;
(3)若
,在线段
上是否存在一点
,使得
,若存在,确定
点的位置;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d781525777c7b5284dffc70b2a28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5acb763021bf166ca719d07223591d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81f17680a23635f823b7dc446e4f3b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83a04565a8ebaa111894b724b0ba266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0c26071fa1ebab92b8e750fd50d828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/3c5a3189-f7f9-454d-ac6d-e44f48bfcc8a.png?resizew=144)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbeab80976db9b4689b9446cda06196a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbfc35fc915ac7d4dc017e60ccdecbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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10 . 如图,在五面体ABCDEF中,四边形ABCD是矩形,平面ADE⊥平面ABCD,AB=2AD=2EF=4,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/5031f688-3115-4e43-a57b-f938070b0ebe.jpg?resizew=214)
(1)求证:
;
(2)求直线AE与平面BCF所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80e6292216592a5eba3293a85bbdb3e1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/5031f688-3115-4e43-a57b-f938070b0ebe.jpg?resizew=214)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/984006c7d9e44824f76aa877bf79636c.png)
(2)求直线AE与平面BCF所成角的正弦值.
您最近一年使用:0次
2022-11-08更新
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376次组卷
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5卷引用:北京市铁路第二中学2022-2023学年高二上学期期中考试数学试题