名校
1 . 如图,在直三棱柱
中,点
是
的中点,
.
平面
;
(2)若
,求直线
与平面
的所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c1b049abfab17512ac0683cb4d39d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4560fa4ad459b58b723c74bd24e51ebf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/576854b601033aeaeccbb778e460d03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
您最近一年使用:0次
2024-06-08更新
|
441次组卷
|
2卷引用:四川省成都市金牛区成都外国语学校2023-2024学年高二下学期5月月考数学试题
名校
解题方法
2 . 如图所示的几何体是由正方形
沿直线
旋转90°得到的.设
是圆弧
的中点,
是圆弧
上的动点(含端点),则直线
与平面
所成角的正弦值最大为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8192018a58bb1fe23769a48a4d9042ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbdb53e0fdf3ebeb96e4f69feacbd80e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb10d645970e5860afd3430957fab6c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
3 . 如图,在三棱柱
中,
,
,四边形
是菱形.
;
(2)若
,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b09257183a9578be6adf9ad4310e4000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b65798afbc7efaed6d65d0719c3c391.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0af487efe25c906740c70b6616e4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dfb64c679bf4a62e5ee092d8885fc09.png)
您最近一年使用:0次
2024-04-13更新
|
1291次组卷
|
6卷引用:四川省南充高中2023-2024学年高三下学期第十六次月考理科数学
名校
4 . 如图,棱长为的正方体中,
为线段
上的动点(不含端点),以下正确的是
①;
②存在点,使得
//面
;
③的最小值为
;
④存在点,使得
与面
所成线面角的余弦值为
.
您最近一年使用:0次
名校
解题方法
5 . 如图,若正方体的棱长为2,点
是正方体
的底面
上的一个动点(含边界),
是棱
的中点,则下列结论中正确结论的序号是_____ .
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/a070de74-2264-49dd-a14f-2417d788ec80.png?resizew=150)
①若保持
,则点
在底面
内运动路径的长度为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acf77fb99faef2e0ace04dbb972eb74f.png)
②三棱锥
体积的最大值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
③若
,则二面角
的余弦值的最大值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83303d3784492506fc44f2b4d6b07bc1.png)
④若
则
与
所成角的余弦值的最大值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/a070de74-2264-49dd-a14f-2417d788ec80.png?resizew=150)
①若保持
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34e4d3146f60306eb2da3dcaebda675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acf77fb99faef2e0ace04dbb972eb74f.png)
②三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b42aa5c841d17cbd3ca982f4ba27a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dbdf8648ebbc56720ec14fd91159906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39eefa58485e43a86a1931a2aa7222a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83303d3784492506fc44f2b4d6b07bc1.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4064ef418c6d627f2081071b06d883d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
您最近一年使用:0次
名校
解题方法
6 . 在棱长为
的正方体
中,
,
分别为
,
的中点,点
在正方体表面上运动,且满足
,点
轨迹的长度是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32df475a4f2164dcecfe1bd57fa4d51e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.![]() | B.![]() |
C.![]() | D.4a |
您最近一年使用:0次
名校
7 . 如图,在四棱台
中,底而
为平行四边形,侧棱
平面
,
,
,
.
;
(2)若四棱台
的体积为
,求平面
与平面
所成的锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ddbb0422a136f45653c8c369f2d75fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9e0e6eb66314772b2f9944cf130da94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dbf31dfd36aa456a63bafea8bc1985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e588c032e5f3698cbd35f8dcd61f9a2.png)
(2)若四棱台
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fa0d73f30a242947aaf7da525926266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
您最近一年使用:0次
2024-03-01更新
|
2523次组卷
|
5卷引用:四川省广安市友实学校2023-2024学年高二下学期第一次月考数学试题
名校
解题方法
8 . 已知正方体
的棱长为4,
为空间中一动点,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.点![]() ![]() ![]() |
B.直线![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
9 . 如图,在四棱锥
中,
底面
,四边形
是直角梯形,
,
,点
在棱
上.
平面
;
(2)当
时,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.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/a7dd6f09284794d2c603823033940428.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b523f9ea41acf2f5c5724a0824ae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/677d1863ff4d8ac1604b18149d4f320f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8733eaae66410b00fd6a84294939b9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5102c216393e133fa25dba98cd78535.png)
您最近一年使用:0次
2024-01-11更新
|
2241次组卷
|
26卷引用:四川省绵阳市三台中学校2024届高三下学期第三学月(4月)月考理科数学试题
四川省绵阳市三台中学校2024届高三下学期第三学月(4月)月考理科数学试题四川省绵阳市江油市江油中学2022-2023学年高二下学期期末数学理科试题福建省三明市将乐县第一中学2023-2024学年高二上学期第三次月考数学试题陕西省咸阳市高新一中2023-2024学年高二上学期第三次质量检测数学试卷广东省肇庆鼎湖中学2023-2024学年高二上学期12月月考数学试题四川省宜宾市屏山县2023-2024学年高二上学期期末数学试题(已下线)广东省深圳市深圳中学2024届高三一月阶段测试数学试题宁夏回族自治区银川市银川一中2024届高三上学期第六次月考数学(理)试题辽宁省新高考联盟(点石联考)2023-22024学年高二下学期3月阶段测试数学试题湖南省邵阳市邵东市第一中学2023-2024学年高二下学期第三次月考数学试题山东省滨州市2022-2023学年高二上学期期末数学试题新疆阿勒泰地区2022-2023学年高二下学期期末考试数学试题北京市第五中学2022-2023学年高二下学期期末检测数学试题(已下线)1.4.2 用空间向量研究距离、夹角问题(AB分层训练)-【冲刺满分】2023-2024学年高二数学重难点突破+分层训练同步精讲练(人教A版2019选择性必修第一册)(已下线)第一章 空间向量与立体几何 章末重难点归纳总结-2023-2024学年高二数学《一隅三反》系列(人教A版2019选择性必修第一册)(已下线)第06讲 1.4.2用空间向量研究距离、夹角问题(2)山东省烟台市爱华高级中学2023-2024学年高二上学期期中考试数学试题陕西省宝鸡市千阳县中学2023-2024学年高二上学期期末复习基础训练数学试题辽宁省重点高中沈阳市郊联体2023-2024学年高二上学期1月期末考试数学试题河南省郑州市第十八中学2023-2024学年高二上学期期末模拟数学试题(二)(已下线)专题13 空间向量的应用10种常见考法归类(4)浙江省宁波市奉化区2023-2024学年高二上学期期末检测数学试题广东省茂名市电白区2023-2024学年高二上学期期末质量监测数学试题(已下线)6.3 空间向量的应用 (4)(已下线)专题05 空间向量与立体几何(解密讲义)(已下线)高二上学期期末考点大通关真题精选100题(1)
名校
10 . 如图,在四棱锥
中,
,
是棱
上靠近点
的三等分点.
平面
;
(2)设平面
与平面
的交线为
,若平面
平面
,
,求
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/b6fac6c785c339fba14205ca26eb6a15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa69a2247ad4d5231aa361349b12f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb304d905125170bebfada27e7ed8960.png)
(2)设平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6c23afda5016ebbae7a9a5611c1039.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6546d9c27cc1d9d5c5cbd2fc294f6b3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb304d905125170bebfada27e7ed8960.png)
您最近一年使用:0次
2024-01-04更新
|
483次组卷
|
3卷引用: 四川省泸县第五中学2023-2024学年高二上学期第一次月考试数学试题