1 . 如图,已知三棱锥
的所有棱长均相等,点
满足
,点
在棱
上运动,设
与平面
所成的角为
,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4946537c81242ccfe268617446634fa3.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/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7d5ef3a3d9a03be91135fc426d57cc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/4328df8d-6dcd-4f63-8136-c9c5be8ff696.png?resizew=181)
您最近一年使用:0次
2020-01-05更新
|
891次组卷
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5卷引用:安徽省安庆市第二中学2021-2022学年高二上学期10月阶段考试数学试题
安徽省安庆市第二中学2021-2022学年高二上学期10月阶段考试数学试题(已下线)【新东方】杭州高二数学试卷241浙江省杭州市学军中学2019-2020学年高二上学期期中数学试题(已下线)第一章+空间向量与立体几何(能力提升)-2020-2021学年高二数学单元测试定心卷(人教A版2019选择性必修第一册)(已下线)第三章++空间向量与立体几何(能力提升)-2020-2021学年高二数学单元测试定心卷(人教版选修2-1)
名校
解题方法
2 . 如图,四棱锥
中,
底面ABCD,且底面ABCD为平行四边形,若
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/7f20a2ab-04fa-458d-b3fa-6bde5d9a81c4.png?resizew=170)
(1)求证:
;
(2)若
,求直线PB与平面PCD所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/7f20a2ab-04fa-458d-b3fa-6bde5d9a81c4.png?resizew=170)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b07e317ffe7859e81b42ef4970e344a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/068e62c79ff7a527ff494db199d40b50.png)
您最近一年使用:0次
2020-02-23更新
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284次组卷
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3卷引用:安徽省合肥市庐阳区第一中学2019-2020学年高二上学期10月月考数学(理)试题
2011·海南海口·一模
名校
解题方法
3 . 如图,在三棱柱
中,侧棱垂直于底面,底面是边长为2的正三角形,侧棱长为3,则
与平面
所成的角为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/876f7f16-297e-4ff6-a174-2367f7f4ddae.png?resizew=162)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/876f7f16-297e-4ff6-a174-2367f7f4ddae.png?resizew=162)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-09-08更新
|
351次组卷
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9卷引用:安徽省芜湖市华星学校2020-2021学年高二下学期第一次月考理科数学试题
安徽省芜湖市华星学校2020-2021学年高二下学期第一次月考理科数学试题安徽省合肥市第六中学2020-2021学年高二上学期期中数学(理)试题安徽省合肥市第六中学2020-2021学年高二上学期期中理科数学试题北京一零一中学2022-2023学年高二上学期数学统练试题(1)2015届内蒙古一机一中高三12月月考理科数学试卷【市级联考】河北省遵化市2018-2019学年高二上学期期中考试数学试题(已下线)2011届海南省海口市高三高考调研考试理科数学(已下线)2014年高考数学(理)二轮复习专题提升训练优化重组卷4练习卷【全国校级联考】石家庄四县七校2017-2018学年第二学期期末教学质量检测高一数学
解题方法
4 . 如图,四边形
是平行四边形,
,
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/5d4577c2-339a-4db5-bc88-408bf079e611.png?resizew=170)
(1)求证:平面
平面
;
(2)求直线
与平面
所成角的正弦值.
(3)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41d3f7d55fcbaebc4e2450ac63a3dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61684617e0c137f27903c2047725a9bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa9e716ca556082406c04f9e55c16536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8164432b13bdfcd05df7dacac832b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/5d4577c2-339a-4db5-bc88-408bf079e611.png?resizew=170)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f5ba965420dfd5aa4da211682df096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a9b32570d553161be04d13954e92a1.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926584088b939200d88e64318f2d4e6c.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41861a8201bf8378a05a09ae0bd84635.png)
您最近一年使用:0次
5 . 如图,四边形
是平行四边形,平面
平面
,
,
,
,
,
,
,G为
的中点.
![](https://img.xkw.com/dksih/QBM/2020/1/2/2368595590586368/2370050574516224/STEM/5d71b8d249804b2481654920bc435d1b.png?resizew=228)
(1)求证:平面
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec43f7352b3a8c194b4c37485fb4ffd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058f36d315245b63a811d5c6f348c17b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6370d6c626bdabf1fc694501ee6c714f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61684617e0c137f27903c2047725a9bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e18f38545fb6d8ba32c993f60dc9a774.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71a46dc0bb5d8fa33583817e530a5d21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2020/1/2/2368595590586368/2370050574516224/STEM/5d71b8d249804b2481654920bc435d1b.png?resizew=228)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f5ba965420dfd5aa4da211682df096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a9b32570d553161be04d13954e92a1.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926584088b939200d88e64318f2d4e6c.png)
您最近一年使用:0次
2020-01-04更新
|
333次组卷
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3卷引用:安徽省合肥九中2020-2021学年高二上学期第一次月考数学试题
6 . 如图,在三棱柱
中,
底面
,
、
、
、
分别为
,
、
、
,的中点,且
,
,
.
![](https://img.xkw.com/dksih/QBM/2019/11/28/2343512577851392/2344255396077568/STEM/aea3e659-7daa-4feb-ada9-c4cd75baa7bb.png)
(1)证明:
平面
;
(2)证明:
;
(3)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/8a8bfe2553e852df73185d017c0a62fb.png)
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1efa2b0018617bd579875185dafca39a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2a334af958943fceb06cd4f0e063558.png)
![](https://img.xkw.com/dksih/QBM/2019/11/28/2343512577851392/2344255396077568/STEM/aea3e659-7daa-4feb-ada9-c4cd75baa7bb.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/637edbb6cd73ef73432f055baddcd59a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba99277e38f8d9f817a9d7db8198219.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad4e54a43807996749982e0a52e9172b.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba99277e38f8d9f817a9d7db8198219.png)
您最近一年使用:0次
2019-11-29更新
|
831次组卷
|
5卷引用:安徽省铜陵市第一中学2019-2020学年高二上学期12月月考数学(文)试题
7 . 如图,已知点E是圆心为O1半径为2的半圆弧上从点B数起的第一个三等分点,点F是圆心为O2半径为1的半圆弧的中点,AB、CD分别是两个半圆的直径,O1O2=2,直线O1O2与两个半圆所在的平面均垂直,直线AB、DC共面.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/7291a0ff-4530-451d-b521-de54e079b9e6.png?resizew=196)
(1)求三棱锥D﹣ABE的体积;
(2)求直线DE与平面ABE所成的角的正切值;
(3)求直线AF与BE所成角的余弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/7291a0ff-4530-451d-b521-de54e079b9e6.png?resizew=196)
(1)求三棱锥D﹣ABE的体积;
(2)求直线DE与平面ABE所成的角的正切值;
(3)求直线AF与BE所成角的余弦值.
您最近一年使用:0次
解题方法
8 . 如图,在正方体
中,有下列结论:
![](https://img.xkw.com/dksih/QBM/2020/3/4/2412208525680640/2413025761886208/STEM/9238d87d2b0244669b42e0090d37c021.png?resizew=235)
①
平面
;②
平面
;
③
与底面
所成角的正切值是
;
④
与
为异面直线.
其中正确结论的序号是______ .(把你认为正确的结论的序号都填上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/2020/3/4/2412208525680640/2413025761886208/STEM/9238d87d2b0244669b42e0090d37c021.png?resizew=235)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c233b95865198572282d7a66ce689e94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86eec8526479272d15bb3b171a46de0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1d2e0f281222a5f289ea4008370aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86eec8526479272d15bb3b171a46de0.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
其中正确结论的序号是
您最近一年使用:0次
2020-03-05更新
|
1561次组卷
|
5卷引用:安徽省滁州市定远县重点中学2020-2021学年高二上学期10月月考数学(文)试题
安徽省滁州市定远县重点中学2020-2021学年高二上学期10月月考数学(文)试题【校级联考】安徽省滁州市定远县西片区2018-2019学年高二上学期期中考试数学(文)试题人教A版(2019) 必修第二册 必杀技 第8章 专题3空间线、面位置关系(已下线)2.3.1 直线与平面垂直的判定-2020-2021学年高一数学课时同步练(人教A版必修2)沪教版(2020) 必修第三册 经典导学 第10章 单元检测
9 . 在矩形ABCD中,对角线AC分别与AB,AD所成的角为α,β,则sin2α+sin2β=1,在长方体ABCD﹣A1B1C1D1中,对角线AC1与棱AB,AD,AA1所成的角分别为α1,α2,α3,与平面AC,平面AB1,平面AD1所成的角分别为β1,β2,β3,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/aa67ea2b-c2d8-4b9e-b3d7-f39a74fb3cbe.png?resizew=347)
①sin2α1+sin2α2+sin2α3=1 ②sin2α1+sin2α2+sin2α3=2
③cos2α1+cos2α2+cos2α3=1 ④sin2β1+sin2β2+sin2β3=1
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/aa67ea2b-c2d8-4b9e-b3d7-f39a74fb3cbe.png?resizew=347)
①sin2α1+sin2α2+sin2α3=1 ②sin2α1+sin2α2+sin2α3=2
③cos2α1+cos2α2+cos2α3=1 ④sin2β1+sin2β2+sin2β3=1
A.①③ | B.②③ | C.①③④ | D.②③④ |
您最近一年使用:0次
2019-09-07更新
|
429次组卷
|
3卷引用:安徽省池州市青阳县第一中学2020-2021学年高二下学期3月月考文科数学试题
10 . 已知四棱锥
的底面
是菱形,
底面
,
是
上的任意一点
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/96cf1913-501b-4185-b461-e511e1e5ac51.png?resizew=160)
求证:平面
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc6f6dfdbe7d39891c35f67e1a95c7f.png)
设
,求点
到平面
的距离
在
的条件下,若
,求
与平面
所成角的正切值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba122fecf2fe2a55fd4740823f92c47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/96cf1913-501b-4185-b461-e511e1e5ac51.png?resizew=160)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e54cf75bbfc9db93d27937c8b8e977b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc6f6dfdbe7d39891c35f67e1a95c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc1e888069f54f7699b58131bd0c7f5.png)
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4卷引用:安徽省怀宁县新安中学2023-2024学年高二上学期第一次月考数学试题
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