1 . 如图,在三棱锥D-ABC中,△ABC是边长为2的正三角形,△ADC是以AC为底边的等腰直角三角形,E为AC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/de80a130-22ee-4153-ac43-5f3fe2fb2221.png?resizew=194)
(1)证明:平面BED⊥平面ACD;
(2)若BD=2,点F在BD上,当△AFC的面积最小时,求FA与平面ABC所成角的正弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/de80a130-22ee-4153-ac43-5f3fe2fb2221.png?resizew=194)
(1)证明:平面BED⊥平面ACD;
(2)若BD=2,点F在BD上,当△AFC的面积最小时,求FA与平面ABC所成角的正弦值.
您最近一年使用:0次
2 . 如图所示,在直角梯形BCEF中,
,A,D分别是BF,CE上的点,且
,
,将四边形ADEF沿AD折起,连接BE,BF,CE,AC.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/9590aac9-f994-41d8-9558-2667275643af.png?resizew=264)
(1)证明:
面BEF;
(2)若
,求直线BF与平面EBC所成的角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edb18f3937480ab5ad6cf0d65a357c75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc5e7e3011ea41abd70e1a2c01b0b3e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/9590aac9-f994-41d8-9558-2667275643af.png?resizew=264)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/429551ecb5930b2f033019e4d5b37ad7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a05d97047e3a5c8e125d334d478ee8e.png)
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2022-07-13更新
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349次组卷
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2卷引用:河南省驻马店市2021-2022学年高一下学期期末数学试题
3 . 如图所示,在四棱锥
中,已知底面
是边长为6的菱形,
,
,
,
为线段
上的点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/17/9522ae1a-ca64-4a81-aaea-69ab7812afd6.png?resizew=184)
(1)证明:平面
平面
;
(2)
为线段
上的一点,且
平面
,求
的值及直线
与平面
的夹角.
![](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/3903ddf5830536f7ae700e082bc58f59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb96e0331eebe80ed1ff610faf531fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18a19daec2e4ae64d4b710a80c4783c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee26747d34326dc95617d94aebd10bce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/17/9522ae1a-ca64-4a81-aaea-69ab7812afd6.png?resizew=184)
(1)证明:平面
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa0fe5da877bd3d3e406957d58a2679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2022-07-13更新
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380次组卷
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3卷引用:湖南省永州市2021-2022学年高一下学期期末数学试题
名校
4 . 如图,在正三棱柱
中,
为棱
的中点.
![](https://img.xkw.com/dksih/QBM/2022/7/8/3018059475951616/3020970611236864/STEM/6653dd75c4ae49f7abe77197469aabfc.png?resizew=133)
(1)证明:
平面
;
(2)求
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e0876c707308127bdd67d69a6f98850.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2022/7/8/3018059475951616/3020970611236864/STEM/6653dd75c4ae49f7abe77197469aabfc.png?resizew=133)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c920d02068d0e63ffdab70786c526d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
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2022-07-12更新
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860次组卷
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4卷引用:山东省枣庄市2021-2022学年高一下学期期末数学试题
名校
5 . 如图,在三棱锥
中,
,
,
两两互相垂直,
,
分别是
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/11/8a034a64-fdd7-4f98-88a6-279030b9dc3a.png?resizew=245)
(1)证明:
;
(2)设
,
,
和平面
所成角的大小为
,求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/11/8a034a64-fdd7-4f98-88a6-279030b9dc3a.png?resizew=245)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf271d6475f5305bc922677b4cfe28c.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a65b94de267eb6858634181642c65c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3427311203b1958b9ff89084c66a09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca6d1c5eace748465b2dad5065f5111c.png)
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2022-07-10更新
|
633次组卷
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5卷引用:湖南省五市十校教研教改共同体2021-2022学年高一下学期期末数学试题
湖南省五市十校教研教改共同体2021-2022学年高一下学期期末数学试题(已下线)微专题16 利用传统方法轻松搞定二面角问题(已下线)高一下学期期末数学考试模拟卷01-2022-2023学年高一数学下学期期中期末考点大串讲(人教A版2019必修第二册)甘肃省张掖市某重点校2022-2023学年高一下学期7月月考数学试题福建省泉州第一中学2022-2023学年高二上学期暑假返校数学试题
6 . 如图,在三棱锥
中,
,底面是以
为斜边的直角三角形,点
是
的中点,点
在棱
上.
![](https://img.xkw.com/dksih/QBM/2022/7/6/3016830414798848/3019125102215168/STEM/3e741ec7558e435db0ac59dded56be18.png?resizew=176)
(1)证明:
平面
;
(2)若
,直线
与平面
所成角的正切值为
,求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a83ed45064ec6e16c0024adfc8e2804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2022/7/6/3016830414798848/3019125102215168/STEM/3e741ec7558e435db0ac59dded56be18.png?resizew=176)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0edb1508fc95765f3bb316bcb5252d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c5dbb63ac0cc9ee65a9449438d476e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3be336573dbf683457a5c86d3c996f.png)
您最近一年使用:0次
2022-07-09更新
|
788次组卷
|
3卷引用:福建省南平市2021-2022学年高一下学期期末质量检测数学试题
解题方法
7 . 在正六棱柱
中,各棱长都为a,O为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/12/2cd8a9c5-e813-41aa-9a1b-2c6360ad1dd5.png?resizew=156)
(1)求
与侧面
所成角的正切值;
(2)求平面
与平面
所成的锐二面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/858be9a2f30a22cfdebeaa5bf2e45b4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f1158eaa2e338f564eb18de5bef1d25.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/12/2cd8a9c5-e813-41aa-9a1b-2c6360ad1dd5.png?resizew=156)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce1b066f8869d0ff4513f7a99745125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dac901ff434c379e158fccd64dc6401f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fedb7209a7bac07febf996a05018fcdd.png)
您最近一年使用:0次
8 . 如图,已知四棱锥
平面
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1e0d0d5b6512c8299e5b30dd9af6c5.png)
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5871f03ab98cfbd037ef45bb9e390174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fa003ffef67888a7821243f1f93f1e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1e0d0d5b6512c8299e5b30dd9af6c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
您最近一年使用:0次
9 . 如图1,在平行四边形ABCD中,
,AD=2,AB=4,将△ABD沿BD折起,使得点A到达点P,如图2
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/12/6453d5e9-dcc0-407e-938f-c73abcc16af6.png?resizew=465)
(1)证明:BD⊥平面PAD;
(2)当二面角
的平面角的正切值为
时,求直线BD与平面PBC夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a6f36741b86f464be362b12bac13d2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/12/6453d5e9-dcc0-407e-938f-c73abcc16af6.png?resizew=465)
(1)证明:BD⊥平面PAD;
(2)当二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87aed767c861502aff771e6b0114746c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
您最近一年使用:0次
2022-07-08更新
|
765次组卷
|
3卷引用:广东省梅州市2021-2022学年高一下学期期末数学试题
名校
10 . 已知四棱锥P-ABCD中,△PBC为正三角形,底面ABCD为直角梯形,
,
,
,
.
(2)已知
.
①求二面角
的平面角的余弦值;
②求直线AC和平面PAD所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ff6d7dd48b57f03d82d2c522ee9b94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f807fa55d6a411a31cd1c6bc8cffe59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/781c31ca288515564a25897978bdc43f.png)
①求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b796bbaeb8450404c2d146283562006e.png)
②求直线AC和平面PAD所成角的正弦值.
您最近一年使用:0次
2022-07-08更新
|
969次组卷
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5卷引用:浙江省绍兴市2021-2022学年高一下学期期末数学试题
浙江省绍兴市2021-2022学年高一下学期期末数学试题(已下线)高考新题型-立体几何初步(已下线)期末专题05 立体几何大题综合-【备战期末必刷真题】山东省菏泽市定陶区明德学校(山大附中实验学校)2022-2023学年高一(创新部)下学期6月月考数学试题江苏省南菁高级中学2023-2024学年高一下学期5月月考数学试题