名校
解题方法
1 . 已知正方体
,则
与平面
所成角的正切值为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2 . 如图,已知在长方体
中,
,
,
,点
为棱
上的一个动点,平面
与棱
交于
,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/087d968b-bc67-4764-a05e-948ae7d5b523.png?resizew=140)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f3e58edd1f900ca82bb2a3058293f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a83c0b8db2205a6815811aa4ff5390f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/087d968b-bc67-4764-a05e-948ae7d5b523.png?resizew=140)
A.三棱锥![]() |
B.直线![]() ![]() ![]() |
C.存在唯一的点![]() ![]() ![]() ![]() |
D.存在唯一的点![]() ![]() ![]() |
您最近一年使用:0次
2022-11-25更新
|
240次组卷
|
2卷引用:辽宁省锦州市辽西育明高级中学2022-2023学年高二上学期期中数学试题
名校
3 . 如图,已知
平面
,
,
,
,
,
,点
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/30bb197b-4a4d-405f-9b56-b2121a8477f6.png?resizew=134)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa742d9b84b537be10034553776400e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e4f0c1c9cca0555906d8a53e1a6803d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/133760237c0ccf2d6a83786925b6d23c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ab527e1b5f124429b532804ef3f870f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4eaac4ba87386eca79a4f8b5d99ec38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/30bb197b-4a4d-405f-9b56-b2121a8477f6.png?resizew=134)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb7f072f0834ebdf155abc5dcc9c8d99.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb7f072f0834ebdf155abc5dcc9c8d99.png)
您最近一年使用:0次
2022-11-25更新
|
562次组卷
|
3卷引用:上海市新中高级中学2022-2023学年高二上学期10月月考数学试题
4 . 如图,在三棱锥
中,
,点
分别是
的中点,
底面
.
![](https://img.xkw.com/dksih/QBM/2022/11/20/3113866250829824/3116714997489664/STEM/42dedfbcbb0843afa4fec997d3629d98.png?resizew=187)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3458ac2f57ca59ad8052807621cf0ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe964aa3574061970c9c8066df21c89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76d097f3d2a6cf2c76b1e3f41dfe7fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc6f007dbf1c1a36eb031e520608403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/2022/11/20/3113866250829824/3116714997489664/STEM/42dedfbcbb0843afa4fec997d3629d98.png?resizew=187)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377ca47ae9b5ea2a870b6c0b12cfa010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2022-11-24更新
|
127次组卷
|
2卷引用:四川省安岳县石羊中学2022-2023学年高二上学期期中检测数学理科试题
5 . 如图,已知四棱锥
的底面
为等腰梯形,
为等边三角形,
分别为棱
的中点,
为棱
上的动点(包括端点).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/8d527897-c40d-4990-816f-eee61cb03f6c.png?resizew=172)
(1)若
为棱
的中点,求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
平面
;
(2)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/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a95e199f931a206be68598c481fab26c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d93949d8a15aca4e79cedb978590571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/8d527897-c40d-4990-816f-eee61cb03f6c.png?resizew=172)
(1)若
![](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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ce50ba5e349425274f05d46d120a74.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
6 . 正方体
的棱长为1,
为
的中点( )
![](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/5b7d857811cbd619f868d951aa7a0ab8.png)
A.直线![]() ![]() | B.在直线![]() ![]() ![]() ![]() |
C.直线![]() ![]() ![]() | D.点B到平面![]() ![]() |
您最近一年使用:0次
名校
解题方法
7 . 在长方体
中,对角线
与棱
,
,
所成的角分别为
,
,
,与平面
,平面
,平面
所成的角分别为
,
,
,则下列说法中正确的是_______ .
![](https://img.xkw.com/dksih/QBM/2022/11/23/3115699798990848/3115850044710912/STEM/e1b15d44a0d04b4daf4abb66e9e828e5.png?resizew=419)
①
;②
;
③
;④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943b765718479c160ba61ec5c6f8c5f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e29bf5652f0d4f764c3606efcdb445f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9177f43add5ca8480daa636afc5862b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e12ee28006ffc4b287e6762b01608852.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc43aea5dd0fef2081e399adb23560e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d141631d586f5c35ee68f611c04dec.png)
![](https://img.xkw.com/dksih/QBM/2022/11/23/3115699798990848/3115850044710912/STEM/e1b15d44a0d04b4daf4abb66e9e828e5.png?resizew=419)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19750bcea97effc98b3f8001f88324fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4621598dcab6f453c74b193413edcf0f.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd2d1925c0411c6189182fd4fd36133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f221c48e2e1f6a849777546b0c2feccb.png)
您最近一年使用:0次
2022-11-23更新
|
230次组卷
|
2卷引用:上海市位育中学2022-2023学年高二上学期10月月考数学试题
名校
解题方法
8 . 已知四面体
(如图
的平面展开图(如图
中,四边形
为边长为
的正方形,
和
均为正三角形,在四面体
中:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/03ac9cd4-6c98-490e-a909-e1f4e3dd1c05.png?resizew=387)
(1)证明:平面
平面
;
(2)求二面角
的余弦值;
(3)在图1中作出直线
与平面
的所成角,并求出直线
与平面
的所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdcf8a317ccc87a1bf8e17852fddbe29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad217e26bd3580c35998109de14cef73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](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/63397cda22cb1fad59cf966dfb588643.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/03ac9cd4-6c98-490e-a909-e1f4e3dd1c05.png?resizew=387)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a438393ddfc7da1804baf4932442bb35.png)
(3)在图1中作出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d781525777c7b5284dffc70b2a28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d781525777c7b5284dffc70b2a28a.png)
您最近一年使用:0次
名校
解题方法
9 . 如图,在三棱锥
中,平面
平面
,且
,
,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/b44d0b02-9429-4c44-b469-14eb083e2dbf.png?resizew=168)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af0bb22389f5777c9f4e725f507613ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090bc7be66859f4eba65f4a623bf2954.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/b44d0b02-9429-4c44-b469-14eb083e2dbf.png?resizew=168)
A.![]() | B.直线![]() ![]() ![]() |
C.二面角![]() ![]() | D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
10 . 已知一个正四棱锥的底面正方形边长为1,侧棱长为1,则该棱锥的侧棱与底面所成角的大小为______ .
您最近一年使用:0次