名校
解题方法
1 . 在四棱锥
中,
平面
为棱
中点,
,
,再从条件①、条件②这两个条件中选择一个作为已知.
条件①:
;
条件②:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/b15170fd-4950-4d8f-a0ea-2d60922e0aaf.png?resizew=215)
(1).求证:
;
(2).求直线
与平面
所成角的正弦值.
![](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/23d11e19c84255eb0431415c2dec553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8eb7be08ab924bd4e6360633e4ab383.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1720da6d65e7fa854d98322d3864240.png)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06201e4f55b78d8b30afb257d5a1b16b.png)
条件②:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/b15170fd-4950-4d8f-a0ea-2d60922e0aaf.png?resizew=215)
(1).求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
(2).求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2022-12-04更新
|
396次组卷
|
4卷引用:北京市十一学校2023届高三上学期12月月考数学试题
北京市十一学校2023届高三上学期12月月考数学试题北京市十一学校2023届高三上学期11月月考数学试题云南省楚雄市实验中学2023届高三上学期第三次测试数学试题(已下线)技巧04 结构不良问题解题策略(精讲精练)-1
2 . 如图所示,在直三棱柱
中,
,
,棱
,M、N分别为
、
的中点.建立适当的空间直角坐标系,解决如下问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/cb64f5d6-fe7d-4992-9893-6529309abd54.png?resizew=155)
(1)求BN的模;
(2)求
的值;
(3)求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca38004c7744a7567bef30f0674fe60f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3cc9cccfb4c260dac05f4ed57e8c10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a696a182fff038a86b2bbe8ca099442.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/cb64f5d6-fe7d-4992-9893-6529309abd54.png?resizew=155)
(1)求BN的模;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d23fbf9e2e792c03ae3ab9c14305d161.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6da9f598fecf6fcf41cd65b45cbe08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae80f09dae8acbe1e5e27bd5c4d8164.png)
您最近一年使用:0次
名校
3 . 如图,在四棱锥
中,底面ABCD是矩形,侧棱PA⊥底面ABCD,点E为棱PD的中点,
,
.
![](https://img.xkw.com/dksih/QBM/2022/11/7/3104286552768512/3104512350887936/STEM/dc5415ee1d1e4e24afc64782db6b9689.png?resizew=192)
(1)求证:PB∥平面ACE;
(2)求平面ACE与平面PAB夹角的余弦值;
(3)若F为棱PC的中点,则棱PA上是否存在一点G,使得PC⊥平面EFG.若存在,求线段AG的长;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62526e69e7c4e59d9df8a5b2c2426400.png)
![](https://img.xkw.com/dksih/QBM/2022/11/7/3104286552768512/3104512350887936/STEM/dc5415ee1d1e4e24afc64782db6b9689.png?resizew=192)
(1)求证:PB∥平面ACE;
(2)求平面ACE与平面PAB夹角的余弦值;
(3)若F为棱PC的中点,则棱PA上是否存在一点G,使得PC⊥平面EFG.若存在,求线段AG的长;若不存在,请说明理由.
您最近一年使用:0次
2022-11-07更新
|
864次组卷
|
6卷引用:北京市丰台区2021-2022学年高二上学期期末数学练习试题
北京市丰台区2021-2022学年高二上学期期末数学练习试题北京市第一七一中学2022-2023学年高二上学期期中调研数学试题北京市第八十中学2022-2023学年高二上学期适应性考试数学试题(已下线)模拟卷06陕西省延安市2023-2024学年高二上学期阶段性学习效果评估(二)数学试题(已下线)期中真题必刷压轴60题(18个考点专练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)
名校
解题方法
4 . 如图,在三棱柱
中,
平面
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/2a99927b-b9d7-451f-a10d-54f935a12f4a.png?resizew=168)
(1)求证:
平面
;
(2)若
,求:
①求二面角
的平面角的余弦值;
②直线
与平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25e8fc3dda4f8b45491514b6e22a962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d6d44c8d4cb12b8a68c0e4949973aff.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/2a99927b-b9d7-451f-a10d-54f935a12f4a.png?resizew=168)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de411e207364bd4bdc34bc925d27f869.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e975f6c9fafab8fd7639dc0cd0f70a4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
①求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a7ac27864e1ebdd00b3f9965a69de36.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e975f6c9fafab8fd7639dc0cd0f70a4.png)
您最近一年使用:0次
名校
5 . 如图,在底面是菱形的四棱锥
中,
,
,
,
,
为线段
上一点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/25/428b1a5e-6117-463f-9eed-b0a2fd6a24a8.png?resizew=216)
(1)若
为
的中点,证明:
平面
;
(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/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c24b7a9466a1e35328a8a4b1ba7fa84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d0710321d97361e5782124bbf7f0c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afcbbbe350b38381d1999e2886d45f0e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/25/428b1a5e-6117-463f-9eed-b0a2fd6a24a8.png?resizew=216)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d32e76582bf550593fdef53e081225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5102c216393e133fa25dba98cd78535.png)
您最近一年使用:0次
2022-12-24更新
|
430次组卷
|
3卷引用:北京市第五中学2022-2023学年高二上学期期末数学试题
名校
解题方法
6 . 如图,在四棱锥
中,
平面
,底面
是梯形,点E在
上,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/c75d269d-1e62-449f-a3b7-7e21abe3e9ca.png?resizew=214)
(1)求证:平面
平面
;
(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/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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66df9393f8c47ce408a808e3481cc043.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/c75d269d-1e62-449f-a3b7-7e21abe3e9ca.png?resizew=214)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac48b9ac8efbf41d6ab5242d247bd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
2022-06-12更新
|
598次组卷
|
4卷引用:北京第十二中学2021-2022学年高二6月份阶段性测试数学试题
北京第十二中学2021-2022学年高二6月份阶段性测试数学试题北京市第十二中学2021-2022学年高二6月份阶段性练习数学试题(已下线)1.2.3 直线与平面的夹角(已下线)第07讲 空间向量的应用 (2)
7 . 如图,已知正方形
和矩形
所在的平面互相垂直,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/a8199f2e-f368-47fe-9dc0-04ed2632fff9.png?resizew=246)
(1)求证:
面
;
(2)求:直线
与面
所成角的正弦值;
(3)在线段
上是否存在点M,使得
平面
,若存在,求
的值.若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4b93d7abcfc4c3df48f03aa969c17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bbe27b490fd189e3e56517ba791f27.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/a8199f2e-f368-47fe-9dc0-04ed2632fff9.png?resizew=246)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c0a8dae112675431078b896e724c3cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4b93d7abcfc4c3df48f03aa969c17f.png)
(2)求:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9efe66d99f813c6b1387392186822bb.png)
(3)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1337ec0af72822be72c4bb4926a4e642.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27fb1ba55d814904c84d5581edf3a1b.png)
您最近一年使用:0次
名校
8 . 如图,在正方体
中,E为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/e66f1a64-21e1-4516-b687-e49bc6a61263.png?resizew=261)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f73038249a611568193c0bcc286fd7.png)
平面
;
(2)求异面直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7ddbb49c644bf06ccbad885ba2c84a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86814dbae9a5343d69bb4647900b3bfe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/e66f1a64-21e1-4516-b687-e49bc6a61263.png?resizew=261)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f73038249a611568193c0bcc286fd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7003aee0b4b85f0fdd48ca9ae5826d54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd90b71635382a0838806c35e53a9e64.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f73038249a611568193c0bcc286fd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
您最近一年使用:0次
解题方法
9 . 如图,在
中,
,
,
.
可以通过
以直线AO为轴旋转得到,且
,动点D在斜边AB上.
![](https://img.xkw.com/dksih/QBM/2022/10/12/3086346645217280/3091895245709312/STEM/afb429fadf204c2e9d6436aa18c88f59.png?resizew=142)
(1)求证:平面
平面AOB;
(2)当D为AB的中点时,求二面角
的余弦值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01cd2bf7c88e24c91625e0f20ba2a4bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a9b5996067a3fc9adcf0ca178dddf03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bbf9680f74a9ac5d934304654ce2771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a621bfa70a014bdcdb58697f099b597.png)
![](https://img.xkw.com/dksih/QBM/2022/10/12/3086346645217280/3091895245709312/STEM/afb429fadf204c2e9d6436aa18c88f59.png?resizew=142)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95a55c40bb7437081d8e669974c8d1b7.png)
(2)当D为AB的中点时,求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c8e08d76f7526b512de81aa679d6b0e.png)
您最近一年使用:0次
10 . 在梯形ABCD中,
,
,
,P为AB的中点,线段AC与DP交于O点,将
沿AC折起到
的位置,使得平面
⊥平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/e5de1c14-f60a-43eb-9ec8-5a075f751db1.png?resizew=366)
(1)求证:
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bde275553b4e49f5adffe606875c6ec3.png)
(2)平面ABC与平面
夹角的余弦值
(3)线段
上是否存在点Q,使得CQ与平面
所成角的正弦值为
?若存在,求出
的值:若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89ee6576c35c682bcb0eff43bd958d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6829c6214e60edbfbf1e31601c6bcb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf468f5132e14ee1d8cc766808b11af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f921b462ee12ad5749ea45d75f609b7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/e5de1c14-f60a-43eb-9ec8-5a075f751db1.png?resizew=366)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002cc6a0373255f39172cdee62fb6b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bde275553b4e49f5adffe606875c6ec3.png)
(2)平面ABC与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e95fa1c3bcd3d0464fcadf248e90ace.png)
(3)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be451ce5fad246389ccf4864929d81d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e95fa1c3bcd3d0464fcadf248e90ace.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80dbac2006d30c49943f0241fd976eb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b188172a322d69106c638e1603ac13f.png)
您最近一年使用:0次