名校
1 . 如图所示,在梯形
中,
,
,
.四边形
为矩形,且
平面
.
平面
;
(2)若直线
与
所成角的正切值为
,点
在线段
上运动,当点
在什么位置时,平面
与平面
所成的锐二面角的余弦值为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f18f1b5ebe17b068fe79bdf30d6effc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b0382c28547d3834ca71f3f0677695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbc56d42b003cbcb1fbe5c50e55b26b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac0b72906641ed13716cfbce50923282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09d9d486b7f91ba933210dd013a7f2c.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf2f0df53aa68c9c334165034788166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2db1674add0f4a1a24f5ed893b1c5d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e108d5c61e85e0741ec2c484fc5768.png)
您最近一年使用:0次
2024-01-31更新
|
1201次组卷
|
5卷引用:四川省攀枝花市普通高中2023-2024学年高二上学期教学质量监测数学试题卷
四川省攀枝花市普通高中2023-2024学年高二上学期教学质量监测数学试题卷2024届高三新改革适应性模拟测试数学试卷二(九省联考题型)(已下线)第5讲:立体几何中的动态问题【练】(已下线)黄金卷04(2024新题型)新疆生产建设兵团第三师图木舒克市第一中学2023-2024学年高二下学期数学开学考试数学试卷
2 . 如图,在几何体
中,四边形
是等腰梯形,四边形
是矩形,且平面
平面
,
,
分别是
的中点.
;
(2)若点
到平面
的距离是
,求
与平面
所成的线面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5a68a008a22d5a8cea5fe8dcf31e10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba74e936c53298ad7a545afc2d1b83d.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/4e88ee337b7c9082f4fe84fd1752d55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84be64d28b1623e71ad989f37336b1f2.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c4c865445dda4a59b6d5cb18fd74404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70db40c42655327adee01caedfc9d50c.png)
您最近一年使用:0次
解题方法
3 . 如图,直四棱柱
的底面是菱形,
,
,
,E为
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/10/1ad57cb9-67f1-4fbd-80e7-df9b0bad9b96.png?resizew=161)
(1)证明:B,E,F,
四点共面;
(2)求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/295a9f94562d7f9cbcc8ce8988546875.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/10/1ad57cb9-67f1-4fbd-80e7-df9b0bad9b96.png?resizew=161)
(1)证明:B,E,F,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554b3b4c5ce7aca81becc07ed4903736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95fd5a6c918421ec884df61ccf1f4d8.png)
您最近一年使用:0次
名校
4 . 如图正方体
,中,点
、
分别是
、
的中点,
为正方形
的中心,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/a460557e-9b0c-4882-b10e-f066aa4b57a7.png?resizew=180)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/698e0bf94fa25fe724da8d5504b8557a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/a460557e-9b0c-4882-b10e-f066aa4b57a7.png?resizew=180)
A.直线![]() ![]() | B.直线![]() ![]() |
C.直线![]() ![]() | D.直线![]() ![]() ![]() |
您最近一年使用:0次
2022-01-28更新
|
812次组卷
|
5卷引用:四川省攀枝花市2022届高三第二次统一考试数学(理)试题
名校
5 . 如图,在三棱锥
中,平面
平面
,
为等边三角形,
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/89a56215-dea8-4ad9-a5bd-973f4ff03dc6.png?resizew=220)
(1)证明:
;
(2)若
,求二面角
平面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ab13ef156d034b710d811e09b0be34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/89a56215-dea8-4ad9-a5bd-973f4ff03dc6.png?resizew=220)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4cd8ba7eb52e38857830162e770f534.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e9ef3e849788645552cfb0735d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87aed767c861502aff771e6b0114746c.png)
您最近一年使用:0次
2019-11-21更新
|
2370次组卷
|
8卷引用:2019年11月四川省攀枝花市一模数学(理)试题
6 . 如图1,圆的内接四边形ABCD中,
,
,直径
.将圆沿AC折起,并连接OB、OD、BD,使得△BOD为正三角形,如图2.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/1/9c1b3c38-39cb-4ac0-a6e6-84fb53b5a32f.png?resizew=344)
(1)证明:图2中的
平面BCD;
(2)在图2中,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ff6344a198f6c10562b7980f8879dca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f604584d80ee1e71616275106ad1c104.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/1/9c1b3c38-39cb-4ac0-a6e6-84fb53b5a32f.png?resizew=344)
(1)证明:图2中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
(2)在图2中,求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f44a76ad699ccf0c093ef1f8222d456.png)
您最近一年使用:0次
名校
7 . 如图,在四棱锥
中,
平面
,
,
,过
的平面与
,
分别交于点
,
,连接
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/ef9522a3-3008-4ed6-b8af-f7879707674c.png?resizew=223)
(1)证明:
.
(2)若
,
,平面
平面
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6be2b61f4a38e2ee2c1a01e00b3ae6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb18c7c5391647214d4da31a88202d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28bb994c172c6e9a318f6bef13d149c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9eeee83b4b7c6ceac7828ff534ce15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/21/ef9522a3-3008-4ed6-b8af-f7879707674c.png?resizew=223)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe57ea6af8ce746e83919e038bbe2163.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d63f9e9964cdbba091d4d5068a4fc307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e61dcea246d9be228d26796f59443bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f538e1924133b0aa08a003fed45cf2aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af29254fe60a392c249c5791279e9c8.png)
您最近一年使用:0次
2022-10-18更新
|
662次组卷
|
5卷引用:四川省攀枝花市第七高级中学2022-2023学年高三上学期第四次诊断考试理科数学试题
名校
8 . 如图,矩形
和菱形
所在的平面相互垂直,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/b3ed4a44-76d5-4548-99eb-3cb980adee5a.png?resizew=167)
(Ⅰ)求证:
平面
;
(Ⅱ) 求
,
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a34a1a0354e836d4c88eeb7d2589283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ea51ea069366bc54eec52f90c066df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82c8e43374c0ba0ffd8e337158f27107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4553a3034f89da311519cd866a0a3cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87f74a2f61d78627296fac510313d219.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/b3ed4a44-76d5-4548-99eb-3cb980adee5a.png?resizew=167)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8915ddd2e034d25e3c30d30be835bda8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19e979c77e18af588ac138a15e255f1b.png)
(Ⅱ) 求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf0a82ce7d7c3a93ce191d95ea23411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b65b4fc15ef119b66c20d320d166335.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecfb011b2ce8ee0238a4407ceadb0f30.png)
您最近一年使用:0次
2019-02-15更新
|
2286次组卷
|
9卷引用:【市级联考】四川省攀枝花市2019届高三第一次统一考试理科数学试题
【市级联考】四川省攀枝花市2019届高三第一次统一考试理科数学试题【市级联考】四川省攀枝花市2019届高三第一次统考理数试题【全国百强校】四川省棠湖中学2019届高三上学期第三次月考数学(理)试题【市级联考】陕西省汉中市2018-2019学年高二第一学期期末校际联考数学(理科)试题【市级联考】湖南省岳阳市2019届高三第二次模拟考试数学(理)试题福建省漳平市第一中学2019-2020学年高三上学期第二次月考试题 数学(理) 试题(已下线)专题23 空间角与距离-冲刺2020高考跳出题海之高三数学模拟试题精中选萃2020届贵州省铜仁市高三第二次模拟考试试卷理科数学试题贵州省凯里市第一中学2018-2019学年高二下学期期末考试数学(理)试题
名校
解题方法
9 . 如图,
的外接圆
的直径
垂直于圆
所在的平面,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/d7edff25-caa8-4f95-b54a-b8bbb7be0888.png?resizew=149)
(1)求证:平面
平面
;
(2)若
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040ad96bf89a27ba00558c56b73caf9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5117e5fe08f5e3b0f465f06cc606cf8c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/d7edff25-caa8-4f95-b54a-b8bbb7be0888.png?resizew=149)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a46fbde58e12b1edc038ae9e921722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c42bce098904b241986bb91c65ab33.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/153e142167b0ac80ff464274e1753f6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68a7bf0da4f7c6f739d2e2461ad9b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ddb7c2ca1b6bee86cb24fed02e40da2.png)
您最近一年使用:0次
2022-11-01更新
|
531次组卷
|
7卷引用:四川省攀枝花市2021届高三二模考试数学(理)试题
名校
10 . 如图,在四棱锥
中,侧面
底面
,底面
为梯形,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b1a47b586cc69316a78902f1ac0728.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/8ff9b4b2-a343-45c8-9684-f26792c06505.png?resizew=162)
(1)证明:
;
(2) 若
为正三角形,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c342170b9efb70024aa00bea5562cd83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.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/09b1a47b586cc69316a78902f1ac0728.png)
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8卷引用:四川省攀枝花市2019-2020学年高三上学期第二次统一考试数学(理)试题
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