1 . 如图,在四棱锥
中,底面
是边长为2的菱形,
,
为正三角形,
为
的中点,平面
与平面
的交线为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/2b1e59ae-56fd-47c4-b0e8-5b6c06b305ff.png?resizew=177)
(1)证明:
平面
.
(2)若二面角
为
,求锐二面角
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/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c606f78391198b6648ba0b92b60f8cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/2b1e59ae-56fd-47c4-b0e8-5b6c06b305ff.png?resizew=177)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23976db53f05b3d5d791c4d736a7184d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c911b404bbb8f8d5f1470585fa31ad97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a4597684abe427acbc7936e5f35d0f.png)
您最近一年使用:0次
名校
解题方法
2 . 在菱形
中,
,
,
,
分别为
,
的中点,将菱形
沿
折起,使
,
为线段
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/6/4da19a0c-2c23-44bb-a8b8-5454d4a70658.png?resizew=311)
(1)求
大小;
(2)求直线
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ec435aa1401dbce7863b531bf2f3e5.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d384390f4e0a1e0abd4cc19382d94db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/6/4da19a0c-2c23-44bb-a8b8-5454d4a70658.png?resizew=311)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b89403a4db68423b83136d2cbff6225.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc704b98f4ed2c7359a7a5b6498b5290.png)
您最近一年使用:0次
2024-01-19更新
|
175次组卷
|
2卷引用:河北省邢台市2024届高三上学期期末调研数学试题
解题方法
3 . 如图,在直三棱柱
中,底面
是等腰直角三角形,且
是线段
上一动点(不含端点),
是
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/e624cbee-1388-405d-824f-47fe0f520fea.png?resizew=169)
(1)当
平面
时,求三棱锥
的体积;
(2)当
与平面
所成角的余弦值为
时,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/064a85cbe661188cb3bbcf25d98c30ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f21c7c194c5bc2986a21fd441c81495.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/e624cbee-1388-405d-824f-47fe0f520fea.png?resizew=169)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c7c261740ac2ae26715e1298ca278a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e74395b07e8153a0ef0bbcb5881013f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b48105276f2917e22c29ad1759597ce.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e74395b07e8153a0ef0bbcb5881013f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e74395b07e8153a0ef0bbcb5881013f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
您最近一年使用:0次
解题方法
4 . 如图,在四棱锥
中,
平面
,
,
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/1/fc451d07-4589-40e8-87c5-237627718685.png?resizew=161)
![](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/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa7d27c9550e3cce07fff7e0c8755b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/1/fc451d07-4589-40e8-87c5-237627718685.png?resizew=161)
A.直线![]() ![]() ![]() |
B.![]() |
C.![]() |
D.点![]() ![]() ![]() |
您最近一年使用:0次
2023-12-29更新
|
234次组卷
|
2卷引用:河北省邢台市质检联盟2023-2024学年高二上学期第四次月考(12月)数学试题
名校
解题方法
5 . 如图,在直三棱柱
中,
,
分别为
,
的中点.
,求
的值;
(2)求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a9ad711b25c36dae0c2a2cedff9954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c45fb1bd3936fe41d53ea3ac772bf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabe764f05300ac83c7d16b685d27af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e79d86dcb456ab7ae39a37c70b372848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
您最近一年使用:0次
2023-12-24更新
|
769次组卷
|
7卷引用:河北省邢台市质检联盟2023-2024学年高二上学期第四次月考(12月)数学试题
河北省邢台市质检联盟2023-2024学年高二上学期第四次月考(12月)数学试题贵州省六盘水市水城区2023-2024学年高二上学期12月质量监测数学试题广东省东莞市东华高级中学2024届高三一模数学试题吉林省部分名校2023-2024学年高二上学期期末联合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(六)新疆兵团地州学校2023-2024学年高二上学期期末联考数学试题(已下线)高二数学开学摸底考 01(人教B版2019选择性必修第一册+第二册)-2023-2024学年高二数学下学期开学摸底考试卷
名校
6 . 如图,在直三棱柱
中,M,N,P分别为
的中点.
平面
;
(2)若
,求直线
与平面
所成角的正弦值;
(3)在(2)的条件下,在
上是否存在一点E,使得
与BP垂直?若存在,求出
的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0863947c83ce1b420980973a3690802b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f475878dd1b32b0486cbf7b5ffbedd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae80f09dae8acbe1e5e27bd5c4d8164.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46203a0457d9b9c76815cbd5b3c9ed1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae80f09dae8acbe1e5e27bd5c4d8164.png)
(3)在(2)的条件下,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee16c91119c5601a7c93a6642c95e7f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f1158eaa2e338f564eb18de5bef1d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b45112a1f092f018b5b1f9a0401e99c.png)
您最近一年使用:0次
2023-12-11更新
|
349次组卷
|
2卷引用:河北省邢台市第一中学2023-2024学年高一下学期第三次月考(5月月考)数学试题
解题方法
7 . 在四棱锥
中,底面
是边长为2的正方形,
平面
,且
.若
分别为棱
的中点,则( )
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b199a99e53d67ff4abf233930961a29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb6bef0b52868b2e5ca2c4d71c1b845.png)
A.![]() ![]() |
B.直线![]() ![]() ![]() |
C.![]() ![]() ![]() |
D.平面![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
8 . 如图,在斜三棱柱
中,
是边长为
的等边三角形,
,
分别为
,
的中点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/2/b14f141f-07a2-43bb-ad4d-0d4ae303ae31.png?resizew=154)
(1)证明:
.
(2)若
,
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/723ab999252bd90022513e56e018c1bf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/2/b14f141f-07a2-43bb-ad4d-0d4ae303ae31.png?resizew=154)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107930f76e1a7266df474665b3fb256e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc416a5b8dc234628e7475387888d82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f5f80c775372eb3d5d30f5c015a57f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2fecaad729e54dc1c9cea29c27d362b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/440b730dd5cd641712fae64473cb4b79.png)
您最近一年使用:0次
2023-11-10更新
|
276次组卷
|
6卷引用:河北省邢台市五岳联盟2023-2024学年高二上学期期中数学试题
名校
解题方法
9 . 苏州博物馆(图一)是地方历史艺术性博物馆,建筑物的顶端可抽象为如图二所示的上、下两层等高的几何体,其中上层是正四棱柱,下层底面
是边长为4的正方形,
在底面
的投影分别为
的中点,若
,则下列结论正确的有( )
A.该几何体的表面积为![]() |
B.将该几何体放置在一个球体内,则该球体体积的最小值为![]() |
C.直线![]() ![]() ![]() |
D.点![]() ![]() ![]() |
您最近一年使用:0次
2023-11-10更新
|
664次组卷
|
10卷引用:河北省邢台市五岳联盟2023-2024学年高二上学期期中数学试题
河北省邢台市五岳联盟2023-2024学年高二上学期期中数学试题河北省部分高中2023-2024学年高二上学期期中数学试题湖南省常德市部分学校2023-2024学年高二上学期11月联考数学试题湖北省荆州中学2023-2024学年高二上学期期中数学试题广西贵港市部分学校2023-2024学年高二上学期期中联考数学试题河北省沧州市沧县中学等校2023-2024学年高二上学期期中联考数学试题河北省石家庄市第十八中学2023-2024学年高二上学期期中数学试题湖南省湘潭市湘潭县第四中学2023-2024学年高二上学期期中数学试题(已下线)黄金卷02(已下线)第四章 立体几何解题通法 专题三 参数法 微点3 参数法综合训练【培优版】
名校
解题方法
10 . 如图,在四棱锥
中,底面
是菱形,侧面
是正三角形,
,
,
.
(1)求点
到平面
的距离;
(2)求二面角
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/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c327b3e91d8bea53255d9308a952a276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bbaccd578a43b2397c8bdd50592fa07.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/27/b51587c5-e3a1-4262-8691-e664a8e97dea.png?resizew=172)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa431d661bf9f419e8ab713dd4a3c80.png)
您最近一年使用:0次
2023-11-06更新
|
188次组卷
|
2卷引用:河北省邢台市五校质检联盟2023-2024学年高二上学期期中数学试题