名校
解题方法
1 . 如图,在棱长为1的正方体
中,点
分别是棱
的中点,则异面直线
与
所成角的正弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f650481726f091d693138126453e050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-04-05更新
|
157次组卷
|
5卷引用:吉林省四校2023-2024学年高二下学期期初联考数学试题
吉林省四校2023-2024学年高二下学期期初联考数学试题江苏省连云港市灌南县惠泽高级中学2023-2024学年高二下学期第一次月考数学试题福建省莆田第四中学2023-2024学年高二下学期第一次月考数学试卷(已下线)专题02 空间向量与立体几何--高二期末考点大串讲(苏教版2019选择性必修第二册)(已下线)专题02 空间向量与立体几何--高二期末考点大串讲(苏教版2019选择性必修第二册)
名校
解题方法
2 . 在长方体
中,
,
,点M、N分别在线段
,
上,且
,
.
(1)求直线
与平面
所成角的正弦值;
(2)若直线
与平面
相交于点P,求线段DP的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d262480ffb55b7617f44b63f130c154a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5282dc0f3e18f35495d775e83694943.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcf08c283a57c03de8db6d64b1e2218.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/28/2a0a26ad-6fd5-4d69-a820-ecf01cce90bb.png?resizew=114)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a7bcc1efb8a2ff57d64b6d057da463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae80f09dae8acbe1e5e27bd5c4d8164.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a7bcc1efb8a2ff57d64b6d057da463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae80f09dae8acbe1e5e27bd5c4d8164.png)
您最近一年使用:0次
2023-09-24更新
|
492次组卷
|
2卷引用:吉林省东北师范大学附属中学2023-2024学年高二上学期第一次月考数学试题
名校
3 . 如图,四棱锥
的底面是等腰梯形,
,
,
,
,
为棱
上的一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/9/9534b7f4-29d2-4fc7-b8de-93c3c3b20d6b.png?resizew=155)
(1)证明:
;
(2)若二面角
的余弦值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa9254b9703c6d3935ef8b3b8e36b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9641d01140939c44450bf39773272af6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf84ccef60fa8fd62bb826acfc4cd81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/9/9534b7f4-29d2-4fc7-b8de-93c3c3b20d6b.png?resizew=155)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f304789d5bcf31d9998fd4d920cd157.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f1d9f040e7c4c6e4d9e8c0ed4f44984.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0e23ab2a5db0d58b522f1e2699bfe60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a386b370ffb5739049b3391112b5d2.png)
您最近一年使用:0次
2023-05-08更新
|
2246次组卷
|
6卷引用:吉林省长春市南关区长春市实验中学2023-2024学年高二上学期期中数学试题
名校
4 . 在圆锥PO中,高
,母线
,B为底面圆O上异于A的任意一点.
![](https://img.xkw.com/dksih/QBM/2022/4/14/2958094116044800/2959245912768512/STEM/910e6a9c-8820-46c4-b2b2-9fcbf48d850f.png?resizew=389)
(1)当
时,过底面圆心O作
所在平面的垂线,垂足为H,求证:
;
(2)当
时,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae890f9e8b32aa53a54158f24f4a87bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab2c27eac56fffa4cd7dbe1dcdf1a.png)
![](https://img.xkw.com/dksih/QBM/2022/4/14/2958094116044800/2959245912768512/STEM/910e6a9c-8820-46c4-b2b2-9fcbf48d850f.png?resizew=389)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25490c72ad1b9968e6be5c5f6b268ab3.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d162c29b1e484cfc87350dd68f00b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb92d6ab1b9a520e272f3649f35ab07a.png)
您最近一年使用:0次
2022-04-16更新
|
1832次组卷
|
5卷引用:吉林省白山市抚松县第一中学2023届高考模拟预测数学试题
吉林省白山市抚松县第一中学2023届高考模拟预测数学试题甘肃省2022届高三第二次高考诊断考试数学(理)试题(已下线)秘籍06 空间向量与立体几何(理)-备战2022年高考数学抢分秘籍(全国通用)(已下线)回归教材重难点03 空间向量与立体几何-【查漏补缺】2022年高考数学(理)三轮冲刺过关宁夏回族自治区固原市西吉中学2024届高三上学期第五次模拟考试数学(理)试题
解题方法
5 . 在正方体ABCD—A1B1C1D1中,异面直线
和
分别在上底面A1B1C1D1和下底面ABCD上运动,且
,若
与
所成角为60°时,则
与侧面ADD1A1所成角的大小为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/057cdb4057bca398a838e868efd360f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.30° | B.45° | C.60° | D.90° |
您最近一年使用:0次
2020-10-03更新
|
1524次组卷
|
6卷引用:吉林省通榆县第一中学2020-2021学年高三上学期第四次质量检测数学(文)试题
吉林省通榆县第一中学2020-2021学年高三上学期第四次质量检测数学(文)试题河南省名校联盟2020-2021学年高三9月质量检测数学文科试题贵州省贵阳为明教育集团2021届高三第一次调研理科数学试题(已下线)专题8.7 立体几何中的向量方法(精练)-2021年新高考数学一轮复习学与练人教A版(2019) 选修第一册 实战演练 第一章 验收检测(已下线)专题 1.2空间向量:求距离与角度13种题型归类(2)
名校
6 . 如图,在三棱柱
中,
是边长为2的等边三角形,
,
,
.
![](https://img.xkw.com/dksih/QBM/2020/4/14/2440891897741312/2441268954726400/STEM/a2c3c01df5fa410aab49a049400b8d15.png?resizew=272)
(1)证明:平面
平面
;
(2)
,
分别是
,
的中点,
是线段
上的动点,若二面角
的平面角的大小为
,试确定点
的位置.
![](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/9f9ee82d7cddd015d0715152994bb29f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1225db7039505351a11f64841ec0af2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da9b02a4ece39842989088e56b1d988b.png)
![](https://img.xkw.com/dksih/QBM/2020/4/14/2440891897741312/2441268954726400/STEM/a2c3c01df5fa410aab49a049400b8d15.png?resizew=272)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04a40cd175e82a0e9c5f77332b29af4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2020-04-14更新
|
929次组卷
|
5卷引用:2019届吉林省普通高中高三第三次联合模拟数学(理)试题
名校
7 . 如图,
矩形ABCD所在平面,
,M、N分别是AB、PC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/c87dc48f-ec3a-49bd-8eff-1191f01efafb.png?resizew=191)
(1)求证:
平面PCD;
(2)若直线PB与平面PCD所成角的正弦值为
,求二面角N-MD-C的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f6967901d6c855864df01e7bf7a15c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/c87dc48f-ec3a-49bd-8eff-1191f01efafb.png?resizew=191)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93cf663ee2bf1ac5c43f4306fa0cf250.png)
(2)若直线PB与平面PCD所成角的正弦值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d83fb9ac8a18e78a4c56da79514b5ccb.png)
您最近一年使用:0次
8 . 如图所示,在三棱锥
中,
平面
,
,
分别为线段
上的点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/d71e5c05-ed4e-4985-9199-18636d50697a.png?resizew=145)
(I)证明:
平面
;
(II)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad797d7795c83fcef32a94e70340e10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7db7c08836b6577b49677115aefe31f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5415c235863bfba1008463d855d14bea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/288ffd471dc0431e40eba039c0d2f005.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/d71e5c05-ed4e-4985-9199-18636d50697a.png?resizew=145)
(I)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a38e6c6dfde2b19b6b47f35a439a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(II)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e867e5c7ef4da37d8985ce82022060e.png)
您最近一年使用:0次
2020-01-29更新
|
218次组卷
|
2卷引用:吉林省长春市第二十九中学2019-2020学年高三上学期期末考试数学(理科)试卷
9 . 已知平面
是边长为
的正方形,平面
是直角梯形,
平面
,
为
与
的交点,且
,
.请用空间向量知识解答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/7f4f6ae4-d5a3-48ff-b9f6-6cf4c7416e38.png?resizew=154)
(1)求证:
平面
;
(2)求直线
与平面
夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca800ae815d2bd23c31c1be367922964.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348fb71fbc47fd87e9ce011652ef4186.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/7f4f6ae4-d5a3-48ff-b9f6-6cf4c7416e38.png?resizew=154)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
2020-01-10更新
|
289次组卷
|
3卷引用:吉林省白山市抚松县第一中学2021-2022学年高二上学期第二次月考数学试题
10 . 已知三棱锥
中,
为等腰直角三角形,
,设点
为
中点,点
为
中点,点
为
上一点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/d8261613-4f12-463d-b5df-156dcb428aee.png?resizew=156)
(1)证明:
平面
;
(2)若
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a0c62babeb52f4e7cddd6b353b2a80f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1828795d52174dd64fba1c9ebe61072b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/d8261613-4f12-463d-b5df-156dcb428aee.png?resizew=156)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/debdc6632a4877e5131d3da25cda8b89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261790c66cc71ee3898afabad0c09f4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d9ef979b9f27a28cbda6923e888ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2019-10-25更新
|
866次组卷
|
4卷引用:吉林省辽源市田家炳高级中学2019-2020学年高二上学期期中数学试题