解题方法
1 . 如图,四棱锥
的底面是矩形,
底面ABCD,
,M为BC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/29/726658cd-4094-4fc6-bc8d-4ea871c3cc1f.png?resizew=153)
(1)求证:
平面PBD;
(2)求平面ABCD与平面APM所成角的余弦值;
(3)求D到平面APM的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35883d6dd1d3d1454275b3b9574090ae.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/29/726658cd-4094-4fc6-bc8d-4ea871c3cc1f.png?resizew=153)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0edb1508fc95765f3bb316bcb5252d.png)
(2)求平面ABCD与平面APM所成角的余弦值;
(3)求D到平面APM的距离.
您最近一年使用:0次
2023-03-29更新
|
5271次组卷
|
8卷引用:北京市朝阳区2023届高三一模数学试题查漏补缺练习 (2)
解题方法
2 . 如图,在三棱柱ABC—A1B1C1中,四边形A1ACC1是边长为4的正方形,
,点D为BB1中点.再从条件①、条件②、条件③中选择两个能解决下面问题的条件作为已知,并作答.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/c9f0746a-4ebe-4a95-9dfb-9d4e3f2170c1.png?resizew=154)
(1)求证:AB⊥平面A1ACC1;
(2)求直线BB1与平面A1CD所成角的正弦值;
(3)求点B到平面A1CD的距离.
条件①:
; 条件②:
; 条件③:平面ABC⊥平面A1ACC1.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/c9f0746a-4ebe-4a95-9dfb-9d4e3f2170c1.png?resizew=154)
(1)求证:AB⊥平面A1ACC1;
(2)求直线BB1与平面A1CD所成角的正弦值;
(3)求点B到平面A1CD的距离.
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d399572bdc5816897500121034d1100c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
您最近一年使用:0次
2023-03-27更新
|
989次组卷
|
3卷引用:北京市朝阳区2023届高三一模数学试题查漏补缺练习 (2)
名校
3 . 在梯形
中,
,
,
,P为AB的中点,线段AC与DP交于O点(如图1).将
沿AC折起到
位置,使得平面
平面
(如图2).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/7f4fd035-e109-4774-8bba-06663dbfbeae.png?resizew=495)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
平面
;
(2)求二面角
的大小;
(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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bbaccd578a43b2397c8bdd50592fa07.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/feb3c5eea67eecdd13a2e6cd60d1d67e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efb49d869110f27140f5c1934143db2e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/7f4fd035-e109-4774-8bba-06663dbfbeae.png?resizew=495)
(1)求证:
![](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/bde275553b4e49f5adffe606875c6ec3.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845b65a3d273b6792d63f3d925cd4bc0.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
2022-11-08更新
|
558次组卷
|
6卷引用:北京市朝阳区清华大学附属中学朝阳学校2022-2023学年高二上学期期中考试数学试题
北京市朝阳区清华大学附属中学朝阳学校2022-2023学年高二上学期期中考试数学试题北京市第五十七中学2021-2022学年高二上学期期末数学试题(已下线)第03讲 空间向量的应用-【帮课堂】2021-2022学年高二数学同步精品讲义(苏教版2019选择性必修第二册)广东省广州市第十六中学2022-2023学年高二上学期期中数学试题上海市青浦高级中学2022-2023学年高二上学期12月质量检测数学试题广东省广州市第五中学2023-2024学年高二上学期期中数学试题
名校
4 . 如图所示正四棱锥
,P为侧棱SD上的点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/30/d0c1ae83-a3de-4493-9be8-8e56f7ca9cad.png?resizew=168)
(1)求证:
;
(2)求直线SC与平面ACP所成角的正弦值;
(3)侧棱SC上是否存在一点E,使得
平面PAC,若存在,求
的值;若不存在,试说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db46bdc86215307e3b6c5c063740d533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c1e319370a8ffcd86362379856d6b95.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/30/d0c1ae83-a3de-4493-9be8-8e56f7ca9cad.png?resizew=168)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c177e06cc3f703e8ca7be7c491fa2942.png)
(2)求直线SC与平面ACP所成角的正弦值;
(3)侧棱SC上是否存在一点E,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c372d059202ec388960b125d4a87dc84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fea0808c7df5a3fa6678ee5406b35b25.png)
您最近一年使用:0次
2022-10-26更新
|
1563次组卷
|
3卷引用:北京市朝阳区北京中学2021-2022学年高二上学期期中数学试题
解题方法
5 . 如图,在边长为
的正方体
中,
为线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/715bbbf5-aaee-42a1-a9fd-ce46099f3595.png?resizew=174)
(1)求证:
平面
;
(2)求点
到平面
的距离;
(3)直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](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/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/715bbbf5-aaee-42a1-a9fd-ce46099f3595.png?resizew=174)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd597851c0db4e4de4769e10e09383b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7850e88507969a07a9515347b97c7b6e.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7850e88507969a07a9515347b97c7b6e.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7850e88507969a07a9515347b97c7b6e.png)
您最近一年使用:0次
6 . 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
解题方法
7 . 如图1,在
中,
,
分别为棱
的中点,将
沿
折起到
的位置,使
,如图2,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/0b00cf59-4b74-4e81-a56e-668428f69139.png?resizew=320)
(1)求证:平面
平面
;
(2)若
为
中点,求直线
与平面
所成角的正弦值;
(3)线段
上是否存在一点
,使二面角
的余弦值为
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad3e2b2689dfe97ec82d473ab6cf469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3632f68ca30bed44e48dc5123df48ef3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65436512ecbaefba4ac8123c55094211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a78fb4672a494d9ab913914755df8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1cbf03524f866cc66d019a01e7c4284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860c4c9419ebfa927b3f3ea14e4f4784.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c3cc1f331dbb2248b0829039df7f3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/0b00cf59-4b74-4e81-a56e-668428f69139.png?resizew=320)
(1)求证:平面
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(3)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc466e229e7bb9ebed69f00f4c5fc42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a69d166677557cadb3da32b4a7e152e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3b1771fbc438ff888bd28bb1dadcee.png)
您最近一年使用:0次
2022-11-07更新
|
779次组卷
|
12卷引用:北京市朝阳区2017-2018学年高二上学期期末考试数学(理)试题
北京市朝阳区2017-2018学年高二上学期期末考试数学(理)试题北京市八一学校2020-2021学年高二上学期期中数学试题四川省遂宁中学校2021-2022学年高二上学期期中考试数学(理)试题河南省中原名校2021-2022学年高二上学期12月联考理科数学试题四川省南充高级中学2021-2022学年高二上学期第二次月考数学(理)试题广东省珠海市第二中学2022-2023学年高二上学期期中数学试题四川省泸州市泸县第一中学2022-2023学年高二上学期期中考试数学(理)试题北京工业大学附属中学2022-2023 学年高二上学期期中考试数学试题四川省乐山沫若中学2022-2023学年高二上学期第二次月考(期中考试)数学(理)试题四川省自贡市第二十二中学校2023-2024学年高二上学期期中数学试题河南省济源市第六中学2022-2023学年高二上学期期末考试数学试卷(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)
8 . 如图,在四棱锥
中,平面
平面
,
,
,
,
,
,
,点O是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/18d6f4d0-c1a7-47eb-ba46-9188e77a763a.png?resizew=159)
(1)求证:
;
(2)求二面角
的余弦值;
(3)在棱
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/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c4340dcffb0783d118a587e5352a2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a8d346469e1777c10b4f972c3e51f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/18d6f4d0-c1a7-47eb-ba46-9188e77a763a.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734a1f7f33f1bb52c0046a618faf769e.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870d5bbe06c91f5c88ccbaa317ce3e72.png)
(3)在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f369bec2d5682bf6b8b317a08aff546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15b63176f43bc7a0654d0f6f45e7429.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25f48d2e4aca820cdc0fa468b7930d0.png)
您最近一年使用:0次
2023-01-06更新
|
664次组卷
|
2卷引用:北京市朝阳区2022-2023学年高二上学期数学期末试题
9 . 如图,直三棱柱
中,
,
,
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/5/0d64e6e9-e542-4bb5-9555-6577a80a103d.png?resizew=140)
(1)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/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ad3a578f403b9e6b97fa2dc955fc11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/5/0d64e6e9-e542-4bb5-9555-6577a80a103d.png?resizew=140)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/762b8cac66d86a013ba839266b023e54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
您最近一年使用:0次
2023-04-04更新
|
1778次组卷
|
4卷引用:北京市朝阳区北京拔萃双语学校2022-2023学年高二下学期期中测试数学试题
10 . 如图,在长方体
中,底面
是边长为2的正方形,
,E,F分别是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/6cab89c2-fd72-44c1-a5e0-d64293b834c0.png?resizew=156)
(1)求证:
∥平面
;
(2)设H在棱
上,且
,N为
的中点,求证:
平面
;并求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4893fbcb191420e06a239e63493626f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cab95678b6f65bc7d15f8f609352c9c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/6cab89c2-fd72-44c1-a5e0-d64293b834c0.png?resizew=156)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f348ed8a1690d3ed02aa64459ca50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7850e88507969a07a9515347b97c7b6e.png)
(2)设H在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e34648df9ac785a84ec3f01b005aed5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/247157c37eb7c3ae9ac5aa7efb69c3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7850e88507969a07a9515347b97c7b6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7850e88507969a07a9515347b97c7b6e.png)
您最近一年使用:0次
2022-05-17更新
|
888次组卷
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3卷引用:北京市朝阳区2022届高三二模数学试题