名校
解题方法
1 . 如图,在棱长为2的正方体
中,
分别为
的中点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31be3b7305d6c181420ea7b28c420851.png)
A.![]() | B.CE与OF所成角的余弦值为![]() |
C.![]() | D.![]() ![]() |
您最近一年使用:0次
2024-05-29更新
|
615次组卷
|
2卷引用:湖北省恩施州高中教育联盟2023-2024学年高二下学期4月期中考试数学试题
2 . 如图,在四棱锥
中,底面
是正方形,平面
平面
,
平面
;
(2)若
是
的中点,平面
与平面
所成锐二面角的余弦值为
,求直线
与平面
所成角的余弦值.
![](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/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c6cc67527976207c8a870c68be9ed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb304d905125170bebfada27e7ed8960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
2024-03-22更新
|
570次组卷
|
3卷引用:湖北省恩施州高中教育联盟2023-2024学年高二下学期4月期中考试数学试题
名校
解题方法
3 . 在四棱锥
中,四边形
为菱形,
,
,
,且
,
为
的中点,
为
的中点,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d857aa8be5c84f3a9817b0af558f4dd.png)
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/35583c5e-0a5e-4019-bedb-72718d239d74.png?resizew=154)
(1)证明:
平面
.
(2)若
不是
的中点,且直线
与平面
所成角的正切值为
,求
的值.
![](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/cd1c9b38caa3555de48cfbbbc08f72d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa412f8619fbf12d1e527a676e81a1a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731d475ac204b904f1b8c2f570148486.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f348b34a230e6c5ccb7e424454e02cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d857aa8be5c84f3a9817b0af558f4dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fee512d7b9eb589b6793f7bf53810c9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/35583c5e-0a5e-4019-bedb-72718d239d74.png?resizew=154)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1399e7ae0b2decaafc62a5cdffb15522.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8b1ebfb8826a78c8c29685337a07092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
名校
解题方法
4 . 如图,在棱长为2的正方体
中,
在线段
(含端点)上运动,
分别是
的中点,则下列判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c0f067a2a348ceb24a408f82992eab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7beb3b41f243ab66df61975d712428fd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/15/a1a2c4f8-a4aa-4fe0-ae48-4959155d8616.png?resizew=151)
A.![]() | B.![]() ![]() ![]() |
C.![]() ![]() | D.三棱锥![]() ![]() |
您最近一年使用:0次
名校
解题方法
5 . 如图,在
中,
,过
的中点
的动直线
与线段
交于点
,将
沿直线
向上翻折至
,使得点
在平面
内的射影
落在线段
上,则斜线
与平面
所成角的正弦值的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23798063fe56a0103967bc8a13c4faf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e3bacc06686947aeaf85e71b2e46aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae7f709cd4bf123f329605b2f9ea679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9399c9a2a31b0e3165aea2d6ccc4f7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae7f709cd4bf123f329605b2f9ea679.png)
您最近一年使用:0次
2024-01-26更新
|
583次组卷
|
4卷引用:湖北省恩施州高中教学联盟2023-2024学年高二上学期1月期末考试数学试题
湖北省恩施州高中教学联盟2023-2024学年高二上学期1月期末考试数学试题广东省广州市广东实验中学2024届高三上学期第三次调研数学试题(已下线)第二章 立体几何中的计算 专题七 空间范围与最值问题 微点7 角度的范围与最值问题(二)【基础版】(已下线)第8题 由空间距离求夹角(压轴小题)
名校
解题方法
6 . 已知点
是平行四边形
所在平面外一点,
,
,
,下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d47267ebdaeba68ea55facb0a98465a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2000d6be47d41882dba64dec3e3ed31e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90a2ef53ce9758da75b395d4986eb89d.png)
A.![]() | B.存在实数![]() ![]() |
C.![]() ![]() | D.四边形![]() ![]() |
您最近一年使用:0次
2024-06-01更新
|
102次组卷
|
6卷引用:湖北省恩施州巴东县第三高级中学2023-2024学年高二上学期第二次月考数学试题
名校
解题方法
7 . 在四棱锥
中,已知底面
是直角梯形,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
,平面
平面
,且
.
(1)证明:平面
平面
;
(2)是否存在实数
,使得平面
与平面
的夹角的余弦值为
?若存在,求出实数
的值;若不存在,请说明理由.
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/556e95b63af1143e719280481585bdcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448cbac9a1ef3de7538a6b30cdc39582.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eef6ba19c7af758f8753939770e78c6e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/0bb87a24-f389-4187-b940-7e28af66802a.png?resizew=203)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/877582b5387278008d14fe5932622fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef796b46e68fe77b117ff0483d2370c.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bdef2e7a7929ad6190302ab44c46c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f35614aff055b98b76ca262f64e629d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80dbac2006d30c49943f0241fd976eb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2023-12-07更新
|
196次组卷
|
2卷引用:湖北省恩施州利川市第一中学2023-2024学年高二下学期开学考试数学试题
名校
解题方法
8 . 在棱台
中,底面
分别是边长为4和2的正方形,侧面
和侧面
均为直角梯形,且
平面
,点
为棱台表面上的一动点,且满足
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59d588432f768c53e5bace86c520cd8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a255e3310d7b64f61eed820bd25dc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e0152f44de35eeb5a72b66b38885617.png)
A.二面角![]() ![]() |
B.棱台的体积为26 |
C.若点![]() ![]() ![]() ![]() |
D.点![]() ![]() |
您最近一年使用:0次
2023-11-17更新
|
757次组卷
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3卷引用:湖北省恩施土家族苗族自治州高级中学2023-2024学年高二上学期能力提升考试数学试题
名校
解题方法
9 . 在棱长为2的正方体
中,
,
分别为
,
的中点,则( )
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
A.异面直线![]() ![]() ![]() |
B.点![]() ![]() ![]() ![]() ![]() ![]() |
C.过点![]() ![]() ![]() ![]() ![]() |
D.当三棱锥![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-11-17更新
|
792次组卷
|
5卷引用:湖北省恩施州四校联盟2023-2024学年高二上学期期中联考数学试题
名校
解题方法
10 . 如图所示,四棱柱
中,底面为平行四边形,以顶点
为端点的三条棱长都为1,且两两夹角为
.
(1)求
的长;
(2)求
与
夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/13/445d709c-9f13-4aa8-9963-bb43fbd14368.png?resizew=178)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e75d14708e6aa1404477db9d7e3166f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
2023-10-12更新
|
252次组卷
|
2卷引用:湖北省恩施一中、建始一中、咸丰一中三校2023-2024学年高二上学期9月联考数学试题