解题方法
1 . 如图,在正方体
中,
和
分别为底面
和侧面
的中心,则二面角
的余弦值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b7b7793d29d66dfdd89e7a6564a35c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd9af670165433e61227ef5d6a73d62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/f7cce511-5e26-4df8-b6ab-dd7bde994425.png?resizew=164)
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2 . 如图,在四棱锥中,
平面
,
,
,
,
,点
为
的中点.
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72aaf3dd6430012945b647bdb51042c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1af39ac32939151e7f33b3139f31995f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8948ac8156d19336083987d47b0f7038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c14ff9b66f21c05e52dc3c8908c2df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd92f3d3305f0106dd9f39ac16202fea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1af39ac32939151e7f33b3139f31995f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2246c0e92e8cc344f636ea8f8f9037e6.png)
您最近一年使用:0次
2023-12-13更新
|
561次组卷
|
3卷引用:3.4.3 求角的大小(九大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
(已下线)3.4.3 求角的大小(九大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)新疆维吾尔自治区阿克苏地区第一中学2023-2024学年高二上学期期末数学试题四川省达州市普通高中2024届高三上学期第一次诊断性测试数学试题(理科)
名校
解题方法
3 . 如图,四棱锥
中,底面
是边长为2的正方形,
,
,且
为
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/11/a28f87b9-e29c-4090-a967-c85658956ff0.png?resizew=148)
(1)求二面角
的余弦值;
(2)在线段
上是否存在点
,使得点
到平面
的距离为
?若存在,确定点
的位置;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/f0063f3f48e49f2970ec7f097567cef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37002ada5d194d4d062fa3285d7d9824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea8d2307fa112f07f830e179cd31d879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/11/a28f87b9-e29c-4090-a967-c85658956ff0.png?resizew=148)
(1)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42f4096ff62b4f29932cd8c6eef661a3.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec1dcba40b263c1119ea0a36651c7812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9868f77d5ab5073b6145f1c6d272122e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
您最近一年使用:0次
4 . 如图,已知四棱锥
,平面
平面
,
为梯形,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/54b6449c-3958-4afe-96e4-94ccd739017b.png?resizew=182)
(1)求证:
⊥平面
;
(2)求
与平面
所成角的余弦值;
(3)已知点
在线段
上,且
,求平面
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d31600cba2d5256c7e78b6122d6755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddda30d9eee26f38f0cb14ff53bd0021.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/54b6449c-3958-4afe-96e4-94ccd739017b.png?resizew=182)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da0f4a53e68e260e6c3f53947185a34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb10d645970e5860afd3430957fab6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bae8b1b206c42d65259543e0b8df1720.png)
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5 . 如图,四面体
的每条棱长都等于
,
分别是
上的动点,则
的最小值是________ ,此时![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8996e6f92f6005ccddb9334a70ff4cb0.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c4cd264c97c1f261229925cc5a6761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8996e6f92f6005ccddb9334a70ff4cb0.png)
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解题方法
6 . 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或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
,棱长都相等的半正多面体,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.已知点
为线段
上一点且
,若直线
与直线
所成角的余弦值为
,设半正多面体的棱长为
,将半正多面体补成正方体,建立如图所示的空间直角坐标系.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/9/f7c0b0c9-c673-425c-9dfc-2c6cfe7117e4.png?resizew=315)
(1)求正方体的棱长,并写出A,B,C,D,F点的坐标.
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e60fbe6820130fb20abc555a94b5ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d03acb29a5812acad760d564d6c84be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01eacbc4d1b4694985214023faa00128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/9/f7c0b0c9-c673-425c-9dfc-2c6cfe7117e4.png?resizew=315)
(1)求正方体的棱长,并写出A,B,C,D,F点的坐标.
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
解题方法
7 . 如图,在三棱锥
中,
,若
,则直线
与
所成角的大小是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58fab6d3792713e1659f554532304914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/672ec1169bab663781450d42f39ffe6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/fb90ba5a-2de7-4165-b232-78d4220153ea.png?resizew=164)
您最近一年使用:0次
名校
8 . 如图,在直三棱柱
中,D点为棱AB的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/baa2bc47-f5a8-406a-9620-37c417657f1e.png?resizew=167)
(1)求证:
平面
;
(2)若直棱柱的所有棱长均相等,求二面角
的平面角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/baa2bc47-f5a8-406a-9620-37c417657f1e.png?resizew=167)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89006cac018a9875f65ed7bd429c61bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc7e774e4ae40c23bf4ceed179230ca.png)
(2)若直棱柱的所有棱长均相等,求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55089af69fcfa82c2a34df1b4e1cabf0.png)
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解题方法
9 . 正四棱锥
的侧面
是等边三角形,
为
的中点,则异面直线
和
所成角的余弦值 为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
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解题方法
10 . 如图,在三棱锥
中,
是以
为斜边的等腰直角三角形,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1012ef33b40b478489204cda41025c.png)
为
中点,
平面
为
内的动点(含边界).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/79354bc6-66da-4e9e-b3b9-f408f9a40033.png?resizew=159)
(1)求平面
与平面
夹角的正弦值;
(2)若
平面
,求直线
与平面
所成角的正弦值的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1012ef33b40b478489204cda41025c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dda3ac680bfea5781ae87dc6db5c5d26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d742e749b1140b21512408d555f14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/79354bc6-66da-4e9e-b3b9-f408f9a40033.png?resizew=159)
(1)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdc4326d832adea0655b05083e6af7f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d58f9019097bd05037aefd5c322916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2023-11-26更新
|
447次组卷
|
2卷引用:上海市实验学校东滩高级中学2023-2024学年高二上学期期中考试数学试题