1 . 在四棱锥
中,
,
,
,
,
、
分别为直线
,
上的动点.
与
所成的角为
,判断
与
是否具有垂直关系并说明理由;
(2)若
,
,求直线
与平面
所成角的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd8e727e4efc22b49649f71ae9c9d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a08b4e03e68c32133a98fc40ed5cf52a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ced8225ff27c8e3e1897b8629312d5.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/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.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/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6626c80ad80a04963079462c44719428.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28f3b098219ba345eda427edb823753a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
您最近一年使用:0次
名校
2 . 如图,在三棱锥
中,已知
.
;
(2)求侧面
与侧面
所成的二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c90d7e37f2fe4b59fa38e39f816c44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b04a4591698f4f2a472f7ed6088674.png)
(2)求侧面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21665d21bbfb04410c78345de1fd15ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9c9cfa597b444b5c9dbae7a825a695.png)
您最近一年使用:0次
2024-05-27更新
|
472次组卷
|
2卷引用:浙江省强基联盟2023-2024学年高一下学期5月期中考试数学试题
3 . 如图,在三棱柱
中,
,
,E,F分别为
,
的中点,且
平面
,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/10/b6696726-849c-403b-80bd-ec161ebb6554.png?resizew=160)
(1)求棱
的长度:
(2)若
,且
的面积
,求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5f445af1ae136773cb338920552ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/10/b6696726-849c-403b-80bd-ec161ebb6554.png?resizew=160)
(1)求棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b45b3bcea638fc84e8fe6d6b1b5317e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7e56c43b15982d6db10a221fcba6ee5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/749505fd0eb84748e77fa3b22a5d69a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f676a67a3dd9284d4d8892b35f23c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8b959c2e73565b18f96256c3161e19.png)
您最近一年使用:0次
解题方法
4 . 如图,在三棱锥
中,
,
.
(1)证明:
;
(2)若
,
,点D满足
,求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6e4a2df58a236c20df5df0d29a466c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00628fb9d49fd0f3b2bd3569f32f9a96.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/11/e7a585a5-84a7-446b-97ff-86399a9a7c8c.png?resizew=139)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90fa715d27ae43ec1e157226bc9dea54.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fe724734454d994d1e74b7b8a66e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b018438e818a671c2e35b80940435bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f91414bbba4600fce6f12441b670d6e.png)
您最近一年使用:0次
5 . 在正三棱台
中,侧棱长为1,且
为
的中点,
为
上的点,且
.
(1)证明:
平面
,并求出
的长;
(2)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/08b818b60f9446b01e086502cfb7dac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2ea6ce533bd6f40967e6bee24c2b94.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/24/a0948a2f-601f-4d4b-bd3f-4cab165bc4ef.png?resizew=160)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,在四棱锥
中,
,
,
是等边三角形,
,
,
.
![](https://img.xkw.com/dksih/QBM/2023/8/9/3299393051672576/3301135146418176/STEM/ed535c9614194c70897d57ffa396f8fa.png?resizew=217)
(1)求
的长度;
(2)求直线
与平面
所成的角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af260e0d98c95d1e092dc4c6d348e3ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da7bcea5a45eeae211f5851f12a7517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b5d2943803894bc5d204e75e2d172b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638d9cccb679214718224c3088ed4a10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d8455347237248c7701100642c5b119.png)
![](https://img.xkw.com/dksih/QBM/2023/8/9/3299393051672576/3301135146418176/STEM/ed535c9614194c70897d57ffa396f8fa.png?resizew=217)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e106f4233be16e98f2c1bf9f1635622.png)
您最近一年使用:0次
2023-08-12更新
|
945次组卷
|
8卷引用:浙江省绍兴市六校2018-2019学年高三上学期10月教学质量检测数学试题
浙江省绍兴市六校2018-2019学年高三上学期10月教学质量检测数学试题浙江省温州市普通高中2018届高三下学期3月高考适应性测试数学试题(已下线)浙江省温州市2023届高三下学期3月高考适应性测试(二模)数学试题【全国校级联考】安徽省示范高中培优联盟2017-2018学年高二下学期春季联赛数学(文)试题广东省茂名市第一中学奥林匹克学校2022-2023学年高二下学期期中数学试题(已下线)专题10 立体几何综合-1(已下线)专题突破卷19传统方法求夹角及距离-1(已下线)重难点突破02 利用传统方法求线线角、线面角、二面角与距离(四大题型)
7 . 已知直角三角形ABC中,D、E分别是AC、BC边中点,将△CDE和△BAE分别沿着DE,AE翻折,形成三棱锥
,M是AD中点.
(1)证明:PM⊥平面ADE;
(2)若直线PM上存在一点Q,使得QE与平面PAE所成角的正弦值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
您最近一年使用:0次
2023-08-10更新
|
386次组卷
|
3卷引用:浙江省宁波市九校2022-2023学年高二上学期期末联考数学试题
浙江省宁波市九校2022-2023学年高二上学期期末联考数学试题福建省诏安县桥东中学2022-2023学年高二下学期期中考试数学试题(已下线)专题05 直线与平面的夹角4种常见考法归类-【考点通关】2023-2024学年高二数学高频考点与解题策略(人教B版2019选择性必修第一册)
名校
8 . 如图,平面
平面
,
是以
为斜边的等腰直角三角形,
分别为
的中点,
.
(1)设
是
的中点,证明:
平面
;
(2)求直线
与平面
所成角的正弦值.
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45f0c24183d99c180c30d8f545aa7365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee6c24eaae0700d09da415e60f701762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3bb28cc6ddb948ac359fffa66a66ed.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/4/6b925f0b-a2a9-4e1f-86b2-b3edc5a40bb7.png?resizew=189)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a779876cdfb2c489ad0eaed0f73e6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5f92c5ae6d8df4bf91d9ba6664b26b9.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5f92c5ae6d8df4bf91d9ba6664b26b9.png)
您最近一年使用:0次
9 . 如图,等腰直角
的斜边
为直角
的直角边,
是
的中点,
在
上,将三角形
沿
翻折,分别连接
、
、
,使得平面
平面
.已知
,
.
![](https://img.xkw.com/dksih/QBM/2023/7/25/3288509319266304/3290524248113152/STEM/a26a5e6b22a84910b5a37ab8f155d844.png?resizew=474)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1384ffba86ff08ce9e783d5d1bc51686.png)
(2)若
,求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58899f5c3638f1e32274137723f99836.png)
![](https://img.xkw.com/dksih/QBM/2023/7/25/3288509319266304/3290524248113152/STEM/a26a5e6b22a84910b5a37ab8f155d844.png?resizew=474)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1384ffba86ff08ce9e783d5d1bc51686.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3505caf94539d51c4edba53a78ad0d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
您最近一年使用:0次
10 . 在棱长为1的正方体
中,以8个顶点中的任意两个作为向量
的起点和终点.
(1)当
时,求
;
(2)记事件
“
”,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6541c242e59b300c2f427539e23a6ad7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ffdc662e8f1b0f78800b699d32362a.png)
(2)记事件
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e8434226270a79dcac1218102f2415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b6f8cb2faaad82b53b2a66ee817a37.png)
您最近一年使用:0次