1 . 如图,在四棱锥
中,
平面
,
,且
,
是
的中点.
;
(2)若
,直线
与直线
所成角的余弦值为
.
(ⅰ)求直线
与平面
所成角;
(ⅱ)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae1e04eeb4de72e5750dae77bcb6f88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25eb757d05fbff80d50c3bb8dbcb8657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce343ec5b0aa9ce4892fa682c614ba6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6164f6484b3b4acafcf1f3fd87ef196.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa42621cd6793e7f3673fdb49bc3123.png)
(ⅰ)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
(ⅱ)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c76abad7103e74e5613a802475f1c0f9.png)
您最近一年使用:0次
名校
解题方法
2 . 在正方体ABCD﹣A1B1C1D1中,过点C作直线l,使得直线l与直线BA1和B1D1所成的角均为
,则这样的直线l( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b112f474fc4e1da5e8c0b326c595ce78.png)
A.不存在 | B.2条 |
C.4条 | D.无数条 |
您最近一年使用:0次
2021-09-14更新
|
1278次组卷
|
7卷引用:浙江省温州十五校联合体2020-2021学年高二上学期期中联考数学试题
浙江省温州十五校联合体2020-2021学年高二上学期期中联考数学试题(已下线)【新东方】杭州新东方数学试卷403广西钦州市第四中学2020-2021学年高一3月份考试数学试题(已下线)专题8-4 立体几何中求角度、距离类型-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)(已下线)专题21 利用传统方法求线线角、线面角、二面角与距离的问题-1四川省遂宁中学校2022-2023学年高二上学期9月月考数学(理)试题(已下线)第11讲空间直线、平面的垂直(核心考点讲与练)-2021-2022学年高一数学考试满分全攻略(人教A版2019必修第二册)(原卷版)
名校
3 . 如图,在直三棱柱
中,
.
![](https://img.xkw.com/dksih/QBM/2021/5/13/2720203138711552/2802149849358336/STEM/a6ee52f2-9763-463b-ac1d-89b8ce070d3b.png?resizew=197)
(1)求证:
;
(2)若
与
的所成角的余弦值为
,求
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/71b9f991c511425863426684814779eb.png)
![](https://img.xkw.com/dksih/QBM/2021/5/13/2720203138711552/2802149849358336/STEM/a6ee52f2-9763-463b-ac1d-89b8ce070d3b.png?resizew=197)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33de9b94a20b9d6ea37cfe135d790801.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b94e97d085cea077cb82a0b7d2f523e.png)
您最近一年使用:0次
名校
解题方法
4 . 如图,四棱锥
的底面四边形
为正方形,四条侧棱
,点
和
分别为棱
和
的中点.若过
、
、
三点的平面与侧面
的交线线段长为
,且异面直线
与
所成角的余弦值为
,则该四棱锥的外接球的表面积为_______ .
![](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/8c8bc233a9902789a716fa0a31558dc0.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821309f088a175c00dc0f4828334503d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/264a7d11-6189-4532-9625-d39b293d9420.png?resizew=176)
您最近一年使用:0次
2021-08-14更新
|
527次组卷
|
2卷引用:吉林省长春市第八中学2020-2021学年高一下学期期中数学试题
20-21高二上·江苏南通·期中
名校
5 . 如图在直棱柱
中,
,
、AC、
的中点分别为D、E、F.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/a8d5333c-9625-4300-8376-ca0ab24ecbd9.png?resizew=157)
(1)求证
平面BEF;
(2)若异面直线
与BF所成的角为
,且BC与平面BEF所成角的正弦值为
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8093ef6d1cb64d41f037f4f01b69c627.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2cdcd37664377755e38dcfc7cd69f3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf8ddee132d4aee6be2bc73854d3f28.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/a8d5333c-9625-4300-8376-ca0ab24ecbd9.png?resizew=157)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
(2)若异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2e3ba0a7f71d26007dab1b28646ded9.png)
您最近一年使用:0次
名校
解题方法
6 . 试在①
,②
,③
三个条件中选两个条件补充在下面的横线处,使得
面ABCD成立,请说明理由,并在此条件下进一步解答该题:
![](https://img.xkw.com/dksih/QBM/2020/6/22/2490384894672896/2490666412040192/STEM/2853c684-6997-4886-81b6-84969b1ca999.png?resizew=281)
如图,在四棱锥
中,
,底ABCD为菱形,若__________,且
,异面直线PB与CD所成的角为
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4125524caac016727c80d2722c5ba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1e4b16c2c6c9bd089da78122e9d2511.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb96e0331eebe80ed1ff610faf531fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://img.xkw.com/dksih/QBM/2020/6/22/2490384894672896/2490666412040192/STEM/2853c684-6997-4886-81b6-84969b1ca999.png?resizew=281)
如图,在四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23f01af749100e1888bba06268843db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b33b7213d99a817bff19bcf740a0697c.png)
您最近一年使用:0次
2020-06-23更新
|
1318次组卷
|
8卷引用:福建省厦门海沧实验中学2021-2022学年高二下学期期中考试数学试题
福建省厦门海沧实验中学2021-2022学年高二下学期期中考试数学试题山东省青岛市青岛第五十八中学2020-2021学年高三上学期期中数学试题山东省青岛市2020届高三二模数学试题(已下线)专题九 立体几何与空间向量-山东省2020二模汇编2021届高三高考必杀技之结构开放题专练(已下线)第01章 空间向量与立体几何(B卷提高卷)-2020-2021学年高二数学选择性必修第一册同步单元AB卷(新教材人教A版)(已下线)专题08向量方法解决角和距离(练)(理科)第一篇 热点、难点突破篇-《2022年高考理科数学二轮复习讲练测》(全国课标版)(已下线)第6章 空间向量与立体几何 单元测试(A卷知识达标)-【学霸满分】2022-2023学年高二数学下学期重难点专题提优训练(苏教版2019选择性必修第二册)
名校
解题方法
7 . 如图,长方体
中,
,
,点
为面
的对角线
上的动点(不包括端点).
平面
交
于点
,
于点
.
![](https://img.xkw.com/dksih/QBM/2020/1/17/2379205671772160/2380930300198912/STEM/61e50b82f1674c6faf6b397987f5ea8f.png?resizew=125)
(1)设
,将
长表示为
的函数;
(2)当
最小时,求异面直线
与
所成角的大小.(结果用反三角函数值表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a7442b64b37f685bc3ae88ff450c1a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee50a23604ea2a9c1f3649dab97c2e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/2020/1/17/2379205671772160/2380930300198912/STEM/61e50b82f1674c6faf6b397987f5ea8f.png?resizew=125)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8711eddf26d11fc974dfb6da4b640918.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
您最近一年使用:0次
2020-01-20更新
|
270次组卷
|
3卷引用:上海市华东师范大学第三附属中学2015-2016学年高二下学期期中(理)数学试题
名校
8 . 平面
//平面
,直线
,点
与面
夹角为
,
,
与
的夹角为
,则
与
的夹角为____.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4ded407f26a39e84706b7c84b4cc5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e063e7a1ddb8a867c274166e044f91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eddc8f2ec8daf5df532d5f2d368f959.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
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9 . 如图,在四棱锥
中,已知
平面
,且四边形
为直角梯形,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/cbc8925c-378a-42bd-b2d2-a2ea44747bbb.jpg?resizew=178)
(1)证明:
;
(2)求平面
与平面
所成锐二面角的余弦值;
(3)点
是线段
上的动点,当直线
与
所成的角最小时,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.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/a8d3947804a878a87052c266be475423.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b10835116b9b777a666b438c907b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/cbc8925c-378a-42bd-b2d2-a2ea44747bbb.jpg?resizew=178)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c583493109d50c9e4634c05e9042a9f.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
您最近一年使用:0次
2019-11-10更新
|
1435次组卷
|
3卷引用:上海市七宝中学2017-2018学年高二下学期期中数学试题
上海市七宝中学2017-2018学年高二下学期期中数学试题安徽省阜阳市第三中学2019-2020学年高二上学期第二次调研考试数学(理)试题(已下线)专题5.8 期末考前选做30题(解答题压轴版)-2020-2021学年高二数学下学期期末专项复习(沪教版)
名校
10 . 如图,直三棱柱
中,
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/9fd1e6f0-0243-4aed-8d51-98b4d64c2ea3.png?resizew=192)
(I)若
为
上的一点,且
与直线
垂直,求
的值;
(Ⅱ)在(I)的条件下,设异面直线
与
所成的角为45°,求直线
与平面
成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeed487430a5b8a330f2d0c52166521a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/9fd1e6f0-0243-4aed-8d51-98b4d64c2ea3.png?resizew=192)
(I)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbd338233af4b4df188757fbf642098f.png)
(Ⅱ)在(I)的条件下,设异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
您最近一年使用:0次
2019-05-13更新
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8卷引用:贵州省黔南布依族苗族自治州都匀市第一中学2019-2020学年高二上学期期中数学(理)试题