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1 . 如图,某人沿山坡PQB的直行道AB向上行走,直行道AB与坡脚(直)线PQ成60°角,山坡与地平面所成二面角
的大小为30°.求:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/7c762a1b-4496-4a5a-9f66-01bf45d88266.png?resizew=226)
(1)直行道AB与地平面PQMN所成的角的正弦值:
(2)若此人沿直行道AB向上行走了200米,那么此时高地平面的高度为多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa108106c22d5d2db396bcec7dda15e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/7c762a1b-4496-4a5a-9f66-01bf45d88266.png?resizew=226)
(1)直行道AB与地平面PQMN所成的角的正弦值:
(2)若此人沿直行道AB向上行走了200米,那么此时高地平面的高度为多少?
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2 . 已知
为正四棱柱,底面边长为2,高为4,
,
分别为
,
的中点.则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
A.直线![]() ![]() ![]() |
B.平面![]() ![]() |
C.正四棱柱的外接球半径为![]() |
D.以![]() ![]() ![]() ![]() |
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2022-11-30更新
|
480次组卷
|
3卷引用:河南省信阳市浉河区信阳高级中学2022-2023学年高二上学期期末数学(文)试题
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解题方法
3 . 长方体
中,已知
与平面
和平面
所成的角均为
,则下列说法不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cdc08e1c4a04a18d5ecea03393e36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
A.![]() |
B.![]() ![]() ![]() |
C.![]() |
D.![]() ![]() ![]() |
您最近一年使用:0次
2022-11-30更新
|
441次组卷
|
4卷引用:福建省厦门第二中学2022-2023学年高二上学期第一阶段考试数学试题
解题方法
4 . 已知正方体
的棱长为2,点
分别是棱
和
的中点.
(1)求
与
所成角的大小;
(2)求
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce1b066f8869d0ff4513f7a99745125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9294c4766531857534a81bc536df57e6.png)
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解题方法
5 . 如图,直三棱柱
中,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/9a7bfb43-b391-4342-88ff-a2e1bc87fb19.png?resizew=145)
(1)求直线
与平面
所成的角;
(2)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90e17995e2f71e297d94ae51c7e5b1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e901c430af74f7bbce43364bd4f2e47.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/9a7bfb43-b391-4342-88ff-a2e1bc87fb19.png?resizew=145)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7d857811cbd619f868d951aa7a0ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0218542daefa15910d5111b27e71f5b3.png)
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解题方法
6 . 方体
中,
,
,点E为棱AB的中点,则
与平面
所成角的大小为___________ (结果用反三角函数值表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7d64fc81c857b124268609a8beb77b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dc61d5de97b5a40be925b278ae494c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
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22-23高二上·江苏南通·期中
7 . 在正四棱柱
中,已知
,
,E为棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/0811df98-958b-4ee1-9162-31846475755e.png?resizew=121)
(1)求证:
;
(2)求
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/962ddfa6a45e5588279c2a93f142924a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/0811df98-958b-4ee1-9162-31846475755e.png?resizew=121)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9cc9be503e0477c4a1319412bbec087.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce1b066f8869d0ff4513f7a99745125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
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解题方法
8 . 在长方体
中,已知
与平面
和平面
所成的角均为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cdc08e1c4a04a18d5ecea03393e36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
A.![]() |
B.![]() ![]() ![]() |
C.![]() ![]() ![]() |
D.![]() |
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解题方法
9 . 如图,在四棱锥P-ABCD中,底面ABCD为平行四边形,
为等边三角形,平面
平面PCD,
,CD=2,AD=3,棱PC的中点为N,连接DN.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/9d472d62-2735-437d-9b63-3efe68651d26.png?resizew=198)
(1)求证:
平面PCD;
(2)求直线AD与平面PAC所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b44f4120c94cb7176dc31fcac387b32e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/9d472d62-2735-437d-9b63-3efe68651d26.png?resizew=198)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
(2)求直线AD与平面PAC所成角的正弦值.
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解题方法
10 . 如图,正三棱柱的底面边长为2,高为1,则直线
与底面
所成的角的大小为______ (结果用反三角函数值表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/e354c527-1249-40d7-bd27-1882fd8820f6.png?resizew=152)
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