1 . 如图,在四棱锥P﹣ABCD中,平面PCD⊥平面ABCD,△PCD是边长为2的等边三角形,底面ABCD是矩形,BC=2
,M为BC的中点.
![](https://img.xkw.com/dksih/QBM/2021/11/23/2857603766288384/2859817396969472/STEM/9a483991-aa03-4d72-8234-ced96ba8a155.png?resizew=274)
(1)求证:AM⊥PM;
(2)求平面AMP与平面AMD的夹角的大小;
(3)求点D到平面AMP的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/2021/11/23/2857603766288384/2859817396969472/STEM/9a483991-aa03-4d72-8234-ced96ba8a155.png?resizew=274)
(1)求证:AM⊥PM;
(2)求平面AMP与平面AMD的夹角的大小;
(3)求点D到平面AMP的距离.
您最近一年使用:0次
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2 . 如图,正三棱柱ABC﹣A1B1C1的所有棱长都为2,D为CC1的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/64af032f-6922-4bf8-868f-b3b3decc68ab.png?resizew=221)
(1)求证:AB1⊥平面A1BD;
(2)求直线A1C1与平面A1BD所成角的正弦值;
(3)求平面A1BD与平面A1DC1的夹角的正弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/64af032f-6922-4bf8-868f-b3b3decc68ab.png?resizew=221)
(1)求证:AB1⊥平面A1BD;
(2)求直线A1C1与平面A1BD所成角的正弦值;
(3)求平面A1BD与平面A1DC1的夹角的正弦值.
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名校
解题方法
3 . 如图,在直三棱柱ABC﹣A1B1C1中,AA1=AC=4,AB=3,BC=5,点D是线段BC的中点.
(2)求二面角D﹣CA1﹣A的余弦值;
(2)求二面角D﹣CA1﹣A的余弦值;
您最近一年使用:0次
2021-11-22更新
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616次组卷
|
7卷引用:天津市第四十三中学2021-2022学年高二上学期期中数学试题
名校
解题方法
4 . 如图,在三棱锥
中,平面
平面
,
,
,
分别为
、
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/2021/11/11/2848859527716864/2849639249453056/STEM/bf47cd72-f084-48f7-a735-fe26c9b1dff8.png)
(1)求点
到直线
的距离
(2)求平面
与平面
夹角的余弦值
(3)已知
是平面
内一点,点
为
中点,且
平面
,求线段
的长.
![](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/b13d28cb7181257cf732af4b615fc47d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/494ed20e68b1df31a3d7dfd31b427bef.png)
![](https://img.xkw.com/dksih/QBM/2021/11/11/2848859527716864/2849639249453056/STEM/bf47cd72-f084-48f7-a735-fe26c9b1dff8.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b61346bd4091070ba84a4046f87f365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
您最近一年使用:0次
2021-11-12更新
|
411次组卷
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3卷引用:天津市第二十五中学2021-2022学年高二上学期阶段检测数学试题
名校
5 . 如图,已知多面体
,
,
,
均垂直于平面
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/6ba1b967-69e7-43c9-b46a-857bb08be045.png?resizew=138)
(1)证明:
平面
;
(2)求平面
与平面
所成角的正弦值;
(3)线段
上是否存在一点
,使直线
与平面
所成的角的正弦值为
,若存在,求
的长,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d17d14819681c455a91d7678742368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a696a182fff038a86b2bbe8ca099442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1859959fdb4c5edd8056893f94a10a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e97fcdcfd6183b976a61ef3222c607.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e918b70b02a73685e3c536c7f380e2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1880586c33da315e49ccb6e2d531c6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a2749f3f4224a1753bcbe2e13b88fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c709354113697ec9c577c7b2449a12f0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/6ba1b967-69e7-43c9-b46a-857bb08be045.png?resizew=138)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4560fa4ad459b58b723c74bd24e51ebf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f664c0db517bec6886ff0b6100fd474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd06851d747f8ccf046bc807b2523e65.png)
(3)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1859959fdb4c5edd8056893f94a10a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd92f594c348f7a956607f7b381cc22a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
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2021-11-03更新
|
705次组卷
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4卷引用:天津市南开区2021-2022学年高三上学期期中数学试题
天津市南开区2021-2022学年高三上学期期中数学试题天津市静海区第一中学2021-2022学年高三上学期第四次阶段检测数学试题(已下线)第35讲 利用传统方法解决立体几何中的角度与距离问题-2022年新高考数学二轮专题突破精练(已下线)考点34 二面角【理】-备战2022年高考数学典型试题解读与变式
名校
6 . 已知三棱锥
的三个侧面与底面全等,且
,
,则以BC为棱,以面BCD与面BCA为面的二面角的平面角大小为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209377196940bffa8ffa5f55b9c59fb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
您最近一年使用:0次
2021-11-03更新
|
195次组卷
|
4卷引用:天津市第一中学2023-2024学年高一下学期阶段性测验2(6月)数学试题
天津市第一中学2023-2024学年高一下学期阶段性测验2(6月)数学试题浙江省杭州市桐庐中学2021-2022学年高二上学期10月阶段性测试数学试题(已下线)考点16 空间向量与立体几何-2022年高考数学一轮复习小题多维练(新高考版)(已下线)考点34 二面角【理】-备战2022年高考数学典型试题解读与变式
名校
7 . 如图,平面四边形
中,
,
,
,以
为折痕将
折起,使点
到达点
的位置,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/8539981b-2e63-47a2-a074-47f0f4b08c28.png?resizew=265)
(1)若
为棱
中点,求异面直线
与
所成角的余弦值;
(2)证明:平面
平面
;
(3)求二面角
的平面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6108b94b7b2d4e1931e0ca459bd843b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1719410d21e3de1242366ce2965e838c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3e27f6e6d1592408508cc9fd14d480.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/8539981b-2e63-47a2-a074-47f0f4b08c28.png?resizew=265)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(2)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c309e58bf083bad13abd549720a63a22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a7ba7cd0c654714c967a900513ba16.png)
您最近一年使用:0次
2021-09-11更新
|
823次组卷
|
3卷引用:天津市四校联考2020-2021学年高一下学期期末数学试题
8 . 如图,在三棱锥
中,
平面
,
,则二面角
的平面角是( )
![](https://img.xkw.com/dksih/QBM/2021/8/11/2783727445966848/2784507282546688/STEM/ad9ebe8353a248fab734f3694eaa2df6.png?resizew=113)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e67a35615a7a9b3aeb0212a62cef30.png)
![](https://img.xkw.com/dksih/QBM/2021/8/11/2783727445966848/2784507282546688/STEM/ad9ebe8353a248fab734f3694eaa2df6.png?resizew=113)
A.90° | B.60° | C.45° | D.30° |
您最近一年使用:0次
解题方法
9 . 如图所示,等边三角形
的边长为4,
为
的中点,沿
把
折叠到
处,使二面角
为60°,则折叠后二面角
的正切值为( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/d9bda354-d241-452e-a39c-a77768850762.png?resizew=144)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01f94135d8428eb1091100d0b97876fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e305b99761863c3d4a64d2dfed01c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8210be02b36760d40a3ab7817c7e5fbb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/d9bda354-d241-452e-a39c-a77768850762.png?resizew=144)
A.![]() | B.![]() |
C.2 | D.![]() |
您最近一年使用:0次
2021-08-07更新
|
607次组卷
|
2卷引用:天津市南开区2020-2021学年高一下学期期末数学试题
10 . 如图,已知在四棱锥
中,底面
是矩形,
平面
,
,
,
、
分别是
、
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/b89415e2-c3cd-4ba8-abcc-5f1bd172a8b8.jpg?resizew=200)
(Ⅰ)求证:
平面
;
(Ⅱ)求
与平面
所成角的正弦值;
(Ⅲ)求二面角
的正切值.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbe8961cca9440ea334ee049d109146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/b89415e2-c3cd-4ba8-abcc-5f1bd172a8b8.jpg?resizew=200)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcafa398cc6b6079883e7ad153eb62d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf12905647aeeded72bbca21a63f319.png)
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(Ⅲ)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15fdf93ad368287ede49777923d190dc.png)
您最近一年使用:0次