名校
1 . 在直三棱柱
中,且
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/2022/3/24/2942979588423680/2943830618333184/STEM/2526f38119e84f698c58ad0e25706c6d.png?resizew=165)
(1)求BN的长;
(2)求异面直线
和
所成角的余弦值;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa349f927cd9126f6bd0238e9414642.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7cf4ac28c2d9089b3d8a45639a72a4e.png)
![](https://img.xkw.com/dksih/QBM/2022/3/24/2942979588423680/2943830618333184/STEM/2526f38119e84f698c58ad0e25706c6d.png?resizew=165)
(1)求BN的长;
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7d857811cbd619f868d951aa7a0ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd4c85bb98a2a0afddd7ed92578ad2e.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b201f1e798eb74963b98f2b0da4132.png)
您最近一年使用:0次
解题方法
2 . 已知空间四边形
各边及对角线长都相等,
分别为
的中点,求
与
夹角余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a373959bb9026f8a09845c0b828bf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad775a32189d5ffab1ef093ae639c45c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://img.xkw.com/dksih/QBM/2022/7/15/3023223465271296/3024415322808320/STEM/3d42e674379947be94404e1272445dc7.png?resizew=175)
您最近一年使用:0次
2022-07-17更新
|
513次组卷
|
3卷引用:安徽省阜阳市临泉县高铁中学2022-2023学年高二上学期第一次月考数学试题
解题方法
3 . 如图,已知长方体
=
=1,直线BD与平面
所成的角为30°,AE垂直BD于E,F为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/10/1625a86a-9356-42de-baac-ec6efca0eae7.png?resizew=213)
(1)求异面直线AE与BF所成的角的余弦;
(2)求点A到平面BDF的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be9e77d0b735c5f400bf88fb710892f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5fce8cbbaf34db1f37c8899345979e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/10/1625a86a-9356-42de-baac-ec6efca0eae7.png?resizew=213)
(1)求异面直线AE与BF所成的角的余弦;
(2)求点A到平面BDF的距离.
您最近一年使用:0次
2022-07-08更新
|
1066次组卷
|
5卷引用:辽宁省鞍山市普通高中2022-2023学年高二上学期第三次月考数学(B卷)试题
辽宁省鞍山市普通高中2022-2023学年高二上学期第三次月考数学(B卷)试题辽宁省鞍山市海城市牛庄高级中学等二校2022-2023学年高二上学期10月月考数学试题河北省唐山市滦南县2021-2022学年高二上学期期中数学试题(已下线)7.6 空间向量求空间距离(精练)(已下线)第07讲 向量法求距离、探索性及折叠问题 (高频考点—精练)
名校
解题方法
4 . 如图,在三棱柱
中,
平面
,
,
,
,
分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/c79735a0-9659-4d9d-9ea7-c15604eec8b9.png?resizew=144)
(1)求证:
;
(2)求异面直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f2185273bf04c11118c7954f7ec822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbe312c442d13f937a286c0ed069d6b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f61ef77be3243e46e5591c4bc4c99942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/c79735a0-9659-4d9d-9ea7-c15604eec8b9.png?resizew=144)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b500528c1f0ed3a48e63a44788b9956.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c92b5799d12ea37de46d7c942ce7a9.png)
您最近一年使用:0次
2022-10-29更新
|
404次组卷
|
4卷引用:黑龙江省大庆市第二中学2022-2023学年高二上学期第一次阶段检测数学试题
2022高三·全国·专题练习
名校
解题方法
5 . 已知圆锥的顶点为P,底面圆心为O,半径为2.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/d0e0d0b2-7137-4979-8b3c-7f2f43934976.png?resizew=138)
(1)设圆锥的母线长为4,求圆锥的体积;
(2)设
,OA、OB是底面半径,且
,M为线段AB的中点,如图.求异面直线PM与OB所成的角的余弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/d0e0d0b2-7137-4979-8b3c-7f2f43934976.png?resizew=138)
(1)设圆锥的母线长为4,求圆锥的体积;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0819cd060cdfb72896f379db29a4724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
您最近一年使用:0次
2021-09-24更新
|
1268次组卷
|
6卷引用:新疆喀什第二中学2022届高三11月月考数学试题
新疆喀什第二中学2022届高三11月月考数学试题(已下线)专题10 立体几何-五年(2017-2021)高考数学真题分项(新高考地区专用)北京市海淀区教师进修学校附属实验学校2020-2021学年高二上学期期末考试数学试题安徽省六安市新安中学2021-2022学年高二上学期期中数学试题(已下线)专题20 立体几何综合大题必刷100题-【千题百练】2022年新高考数学高频考点+题型专项千题百练(新高考适用)(已下线)第08讲 第七章 立体几何与空间向量(基础拿分卷)
6 . 如图,在四棱锥
中,底面ABCD为矩形,
底面
,
,E为PC的中点,求异面直线PD与BE所成角的余弦值.
![](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/ebd9dac6d1d58b3b6bbd29fbc7581eba.png)
![](https://img.xkw.com/dksih/QBM/2021/10/22/2834836157595648/2890252925280256/STEM/4428bfb777ba47b98b3360de5919d8c1.png?resizew=252)
您最近一年使用:0次
名校
7 . 在长方体
中,E,F分别是棱BC,CC1上的点,CF=AB=2CE,AB∶AD:AA1=1∶2∶4
![](https://img.xkw.com/dksih/QBM/2021/12/26/2880413898670080/2886708501798912/STEM/b622fed7-470c-4088-864e-0cfec6ce3f42.png?resizew=171)
(1)求异面直线EF,A1D所成角的余弦值;
(2)证明∶AF⊥平面
;
(3)求二面角A-ED-F正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/2021/12/26/2880413898670080/2886708501798912/STEM/b622fed7-470c-4088-864e-0cfec6ce3f42.png?resizew=171)
(1)求异面直线EF,A1D所成角的余弦值;
(2)证明∶AF⊥平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c9f260496ba23993238601a89eca5c.png)
(3)求二面角A-ED-F正弦值.
您最近一年使用:0次
2022-01-03更新
|
676次组卷
|
2卷引用:甘肃省高台县第一中学2021-2022学年高二下学期3月月考数学(理科)试题
解题方法
8 . 如图,在平行四边形
中,
,
,以
为折痕将
折起,使点
到达点
的位置,且
.
![](https://img.xkw.com/dksih/QBM/2021/12/16/2873999653838848/2877790144331776/STEM/04e4bd7e1f2e4d47b54bdfb7a0cabe4a.png?resizew=257)
(1)证明:平面
平面
;
(2)
为线段
上一点,
为线段
上一点,且
,求异面直线
与
所成的角的余弦.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c836feb2c4346a45ee51053b8073a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df8f80bab0c83725a94b251f1122cfbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63696582e5d23425d9ae54b8d15c6bfa.png)
![](https://img.xkw.com/dksih/QBM/2021/12/16/2873999653838848/2877790144331776/STEM/04e4bd7e1f2e4d47b54bdfb7a0cabe4a.png?resizew=257)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07dcf279d1756918052618fcb9b39107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.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/1a2f3888657ca8a3d49b81e855eb8ea0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
您最近一年使用:0次
名校
解题方法
9 . 如图,在直三棱柱
中,
,
,
,
,
是棱
上一点.
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863972950245376/2869330240446464/STEM/f423a79eea6a4ca08e855b5f519da43d.png?resizew=151)
(1)若
,求
;
(2)在(1)的条件下,求直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1192b3111a6dad01bba5227472bb4072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e240a6378adf6d23ebf9cc710c9bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8bd8c13192ca45c16dad5d59b547220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863972950245376/2869330240446464/STEM/f423a79eea6a4ca08e855b5f519da43d.png?resizew=151)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01676a558e64ef15c9afacbc7acda293.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56149ce7d8ec1225d2efedc06b8a3b2.png)
(2)在(1)的条件下,求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cdc08e1c4a04a18d5ecea03393e36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
您最近一年使用:0次
2021-12-10更新
|
224次组卷
|
2卷引用:湖南省郴州市嘉禾县第一中学2021-2022学年高二上学期9月月考数学试题
名校
10 . 如图,在正方体
中,
、
分别是
、
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/8990fc94-b3d8-47ef-9b50-ec62bce0f4c4.png?resizew=169)
(1)求证:
;
(2)求直线
和
所成角的大小.
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/8990fc94-b3d8-47ef-9b50-ec62bce0f4c4.png?resizew=169)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abfb167a3ba72cd72db2579b6ecddc1.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd4c85bb98a2a0afddd7ed92578ad2e.png)
您最近一年使用:0次
2021-12-04更新
|
627次组卷
|
3卷引用:广西玉林市育才中学2021-2022学年高二12月月考数学(理)试题