1 . 如图,正方体
的棱长为2.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/3fca0077-a488-4b95-82c9-fc72287e753f.png?resizew=174)
(1)证明:
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/3fca0077-a488-4b95-82c9-fc72287e753f.png?resizew=174)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb96d9ea39bf7974143973559058dbec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.png)
您最近一年使用:0次
2023-12-17更新
|
181次组卷
|
2卷引用:西藏自治区拉萨市2024届高三一模数学(理)试题
名校
解题方法
2 . 如图,正方体
的棱长为2.
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f647de53756993a680347e8ce3c0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.png)
您最近一年使用:0次
2023-12-17更新
|
478次组卷
|
5卷引用:西藏自治区拉萨市2024届高三一模数学(文)试题
西藏自治区拉萨市2024届高三一模数学(文)试题(已下线)专题8.10 立体几何初步全章十三大基础题型归纳(基础篇)-举一反三系列(已下线)专题8.12 立体几何初步全章综合测试卷(基础篇)-举一反三系列(人教A版2019必修第二册)宁夏回族自治区石嘴山市第三中学2023-2024学年高一下学期期中考试数学试题(已下线)11.3.2直线与平面平行-同步精品课堂(人教B版2019必修第四册)
名校
解题方法
3 . 如图,已知直角梯形
与
,
,
,
,AD⊥AB,
,G是线段
上一点.
![](https://img.xkw.com/dksih/QBM/2023/7/18/3283445665742848/3285844506075136/STEM/55ef0b66757e4459b1b28064f943f7c0.png?resizew=155)
(1)平面
⊥平面ABF
(2)若平面
⊥平面
,设平面
与平面
所成角为
,是否存在点G,使得
,若存在确定G点位置;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e17cc589a40a0a4c4319ebdfa866c69c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a47dcb24ffe20e8153e0d113ff8bee3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dfc9857ec7c679421b2172b345276ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae1e04eeb4de72e5750dae77bcb6f88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://img.xkw.com/dksih/QBM/2023/7/18/3283445665742848/3285844506075136/STEM/55ef0b66757e4459b1b28064f943f7c0.png?resizew=155)
(1)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d666dd3308604685e59f4ca22663b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20af148464904e21f4374cc8fb886fba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a074401332b35de8a53a7524ebb2007e.png)
您最近一年使用:0次
2023-07-21更新
|
1560次组卷
|
5卷引用:西藏日喀则市2023届高三第一次联考模拟数学(理)试题
解题方法
4 . 《九章算术·商功》:“斜解立方,得两堑堵.斜解堑堵,其一为阳马,一为鳖臑.阳马居二,鳖臑居一,不易之率也.合两鳖臑三而一,验之以棊,其形露矣.”刘徽注:“此术臑者,背节也,或曰半阳马,其形有似鳖肘,故以名云.中破阳马,得两鳖臑,鳖臑之起数,数同而实据半,故云六而一即得.”
如图,在鳖臑ABCD中,侧棱AB⊥底面BCD;
(1)若
,
,
,试求异面直线AC与BD所成角的余弦值.
(2)若
,
,点P在棱AC上运动.试求
面积的最小值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/22/84152742-e106-43ca-a408-c3b4449bce08.png?resizew=416)
如图,在鳖臑ABCD中,侧棱AB⊥底面BCD;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/22/6476cb57-a508-4f63-868c-6a74790b42f7.png?resizew=301)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9c7cbcc38b28d45c8539710e5b260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e1ab67f8e48ad3340cf9d165cd75f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acee03d4bb4667b6c345221b6c9b0fa4.png)
您最近一年使用:0次
5 . 如图,在直三棱柱
中,
,
,
分别为
,
,
的中点.
![](https://img.xkw.com/dksih/QBM/2023/5/8/3233425156571136/3233909931556864/STEM/d151e1559e0741709f726664e877cdc8.png?resizew=137)
(1)求证:
平面
;
(2)若
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.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/dad2a36927223bd70f426ba06aea4b45.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/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://img.xkw.com/dksih/QBM/2023/5/8/3233425156571136/3233909931556864/STEM/d151e1559e0741709f726664e877cdc8.png?resizew=137)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f475878dd1b32b0486cbf7b5ffbedd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae80f09dae8acbe1e5e27bd5c4d8164.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb74eeb04f2f2f68095db616f14c971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae80f09dae8acbe1e5e27bd5c4d8164.png)
您最近一年使用:0次
2023-05-09更新
|
1795次组卷
|
3卷引用:西藏林芝市第二高级中学2023届高三第四次模拟考试数学(理)试题
解题方法
6 . 如图,在直三棱柱
中,
,
,
,
为棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/20/18cb7c40-da00-4b9c-af58-96853a090169.png?resizew=171)
(1)求证:
平面
;
(2)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33de9b94a20b9d6ea37cfe135d790801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78f0b646ccbe31c8d4df21054f82003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a78f1bee29c69699ae6c7dd553c73c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/20/18cb7c40-da00-4b9c-af58-96853a090169.png?resizew=171)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0edb1508fc95765f3bb316bcb5252d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2a0a3bb566b5d2404e4bb823abddfa9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0d025c1c91b88c7d9154a191b3c5c6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e802c9457575dc36375a9a084d73f3d.png)
您最近一年使用:0次
2023-04-18更新
|
1556次组卷
|
4卷引用:西藏拉萨市2023届高三一模数学(文)试题
解题方法
7 . 如图,在直三棱柱
中,
,
,
,
为棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/20/6c9e2af0-b34d-497c-a0b4-4df42193b9cb.png?resizew=150)
(1)求证:
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33de9b94a20b9d6ea37cfe135d790801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78f0b646ccbe31c8d4df21054f82003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a78f1bee29c69699ae6c7dd553c73c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/20/6c9e2af0-b34d-497c-a0b4-4df42193b9cb.png?resizew=150)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0edb1508fc95765f3bb316bcb5252d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2a0a3bb566b5d2404e4bb823abddfa9.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f0d992b0879916037fa5f61d6bea67.png)
您最近一年使用:0次
名校
8 . 如图,在四棱锥
中,
,
平面
,底面
为正方形,
,
分别为
,
的中点.
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1365206d14224e0b2d40a7bd8b7965ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.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/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/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/4/578e3534-c0e1-4c0f-8a35-d416eab64d16.png?resizew=141)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c2b786c64e6a9ed2ec5670cde74f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588690c4a218025937357ffab8d63c7a.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588690c4a218025937357ffab8d63c7a.png)
您最近一年使用:0次
2023-10-17更新
|
387次组卷
|
12卷引用:西藏拉萨市2020届高三第二次模拟考试数学(理)试题
西藏拉萨市2020届高三第二次模拟考试数学(理)试题2020届北京市高考适应性测试数学试题(已下线)专题19 立体几何综合-2020年高考数学(理)母题题源解密(全国Ⅲ专版)(已下线)专题20 立体几何综合-2020年高考数学(理)母题题源解密(全国Ⅱ专版)北京师范大学亚太实验学校2021届高三上学期期中数学试题黑龙江省哈尔滨市第九中学校2020-2021学年高二上学期期中考试数学(理)试题北京市第四十三中学2021届高三1月月考数学试题天津市河西区梧桐中学2020-2021学年高二上学期第一次学情调研数学试题福建省尤溪县第五中学2021-2022学年高二上学期第一次月考数学试题北京市朝阳区北京工业大学附属中学2023-2024学年高二上学期10月月考数学试题云南省砚山县第三高级中学2021-2022学年高二上学期期末考试数学试题云南省昭通市一中教研联盟2023-2024学年高二上学期期末质量检测数学试题(B卷)
9 . 如图,在四棱锥
中,底面ABCD是矩形,M是PD的中点,
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/5/4/2972028596355072/2972770615435264/STEM/2d84cb9ccdbf45ab80b3bb09335c536d.png?resizew=264)
(1)证明:
平面ABCD;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a51fb5580c30fe9e6164361c167b4dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/491c3a4f72b84ebadd28b90711435adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c16d6c5ea2114ec8e4be8959219dd250.png)
![](https://img.xkw.com/dksih/QBM/2022/5/4/2972028596355072/2972770615435264/STEM/2d84cb9ccdbf45ab80b3bb09335c536d.png?resizew=264)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f35614aff055b98b76ca262f64e629d.png)
您最近一年使用:0次
2022-05-05更新
|
1783次组卷
|
7卷引用:西藏昌都市第四高级中学2022届高三一模数学(理)试题
西藏昌都市第四高级中学2022届高三一模数学(理)试题山西省运城中学校2022届高三冲刺模拟(一)数学(文)试题江西省石城县赣源中学2023届高三8月月考数学(文)试题(已下线)第八章 立体几何初步 (练基础)(已下线)8.6.2直线与平面垂直的判定定理(第1课时)(精讲)(2)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)四川省成都市简阳市阳安中学2022-2023学年高二下学期5月月考数学(文)试题广西防城港市高级中学2023届高三下学期2月月考数学(文)试题
10 . 已知在三棱锥
中,平面
平面
,
为等边三角形,
,
,且
,点
为线段
的中点.
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712441864536064/2716145844789248/STEM/1ec3e547-28bb-415f-9518-3ddf16035875.png?resizew=241)
(1)求证:
平面
;
(2)若
为
的中点,求
与平面
所成角的正弦值.
![](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/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcfac9ab1dc776c9ec076ab2a132fcd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712441864536064/2716145844789248/STEM/1ec3e547-28bb-415f-9518-3ddf16035875.png?resizew=241)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2b4e753ef119608188c46a50ec597e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438f34bc8b04e8c494b91306ac6fe352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb5255e2159617505e0c87d01437a57.png)
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