1 . 如图,点
在以
为直径的圆
上,
垂直与圆
所在平面,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/e5f2456c-9d7d-4db4-9613-956a608d9d04.png?resizew=151)
(1)求证:平面
平面
;
(2)若
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/e5f2456c-9d7d-4db4-9613-956a608d9d04.png?resizew=151)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b2b7ac585f315b881360285a23fb83f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
解题方法
2 . 如图正方体
,O是平面
的中心,则
与平面
所成角的正弦值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84f23a20779cbf15d4300ffc69f27f14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c0b612af0e0719e78c620a0b9957a4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17ab89b64fc788c77bd9dea2d17f7d12.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/27c93c97-1650-4761-a7f0-343a42102924.png?resizew=177)
您最近一年使用:0次
3 . 如图,已知
平面
,点
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572585928581120/1572585934348288/STEM/70aaed9f-bff8-4925-8c4f-01ba2e528928.png)
(1)求证:
平面
;
(2)求证:平面
平面
;
(3)求直线
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb11d5f4bab683f72f5b9f259f6b54e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c3259b046324f57ec5f7d8e5e3658e.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572585928581120/1572585934348288/STEM/70aaed9f-bff8-4925-8c4f-01ba2e528928.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bea124cef7ab3fd8069243e9894d1c59.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/286fa8a5d88da060a6d6bea468996283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb7f072f0834ebdf155abc5dcc9c8d99.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb7f072f0834ebdf155abc5dcc9c8d99.png)
您最近一年使用:0次
2016-12-04更新
|
534次组卷
|
6卷引用:2015-2016学年湖南株洲二中高二上第三次月考文数学卷
2015-2016学年湖南株洲二中高二上第三次月考文数学卷2015-2016学年山西省怀仁一中高二下第一次月考数学试卷山西省运城市景胜中学2020-2021学年高二上学期期中数学(文)试题山西省运城市景胜中学2020-2021学年高二上学期期中数学(理)试题(已下线)第七章 应用空间向量解立体几何问题拓展 专题一 空间向量基底法 微点4 空间向量基底法(四)【基础版】(已下线)专题23 立体几何解答题(文科)-3
解题方法
4 . 如图,四边形
是平行四边形,
,
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/5d4577c2-339a-4db5-bc88-408bf079e611.png?resizew=170)
(1)求证:平面
平面
;
(2)求直线
与平面
所成角的正弦值.
(3)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41d3f7d55fcbaebc4e2450ac63a3dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61684617e0c137f27903c2047725a9bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa9e716ca556082406c04f9e55c16536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8164432b13bdfcd05df7dacac832b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/5d4577c2-339a-4db5-bc88-408bf079e611.png?resizew=170)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f5ba965420dfd5aa4da211682df096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a9b32570d553161be04d13954e92a1.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926584088b939200d88e64318f2d4e6c.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41861a8201bf8378a05a09ae0bd84635.png)
您最近一年使用:0次
名校
5 . 一个圆锥的侧面展开图是圆心角为
;则圆锥母线与底面所成角的余弦值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c709f0d1af9c9d18f5d261050edf9916.png)
您最近一年使用:0次
2016-12-03更新
|
752次组卷
|
3卷引用:上海市华东师范大学第二附属中学2023-2024学年高二下学期3月月考数学试卷
名校
6 . 如图,在直三棱柱ABC﹣A1B1C1中,∠BAC=90°,AB=AC=AA1,且E,F分别是BC,B1C1中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/ff8ddd10-b8e3-4000-9575-accbfdeca3f6.png?resizew=152)
(1)求证:A1B∥平面AEC1;
(2)求直线AF与平面AEC1所成角的正弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/ff8ddd10-b8e3-4000-9575-accbfdeca3f6.png?resizew=152)
(1)求证:A1B∥平面AEC1;
(2)求直线AF与平面AEC1所成角的正弦值.
您最近一年使用:0次
名校
解题方法
7 . 已知圆锥的顶点为
,母线长为2,底面半径为
,
,
为底面圆周上两个动点,则下列说法不一定正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
A.圆锥的高为1 | B.三角形![]() |
C.三角形![]() ![]() | D.直线![]() ![]() |
您最近一年使用:0次
2020-10-17更新
|
115次组卷
|
2卷引用:山西省长治市第二中学校2020-2021学年高二上学期第一次月考数学(理)试题
8 . 如图,在正方体
中,M为棱
的中点.
![](https://img.xkw.com/dksih/QBM/2021/1/23/2642332216942592/2643197503987712/STEM/f40b0893-52ee-434b-86ec-432b2b2d0608.png?resizew=239)
(1)求证:
平面
;
(2)连接
,
,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/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/2021/1/23/2642332216942592/2643197503987712/STEM/f40b0893-52ee-434b-86ec-432b2b2d0608.png?resizew=239)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f11f1840eb8b17e7b07c3fe7e987a9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b8372f6eba66a0bd3587106daaf68d1.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588eb9393564a33552c4b2e8de837ca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c597ff77c65c5add6f50294e3eee9536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2f7554a52815bfa0f4d75221ba7397.png)
您最近一年使用:0次
2021-01-24更新
|
84次组卷
|
2卷引用:山西省运城市景胜中学2021-2022学年高二上学期第二次月考数学(理)试题
9 . 在长方体
中,
,E是侧棱
的中点,求:棱
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25e02eaf2a8b07ca9b400d431c6d76c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd265ea575c2231ceb5f05f6354555b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/dbcfc059-9db2-472a-8fa8-cfef025d4886.png?resizew=137)
您最近一年使用:0次
名校
10 . 如图,在四棱锥
中,
平面
,底面是梯形
,
,且
,则下列判断错误的是
![](https://img.xkw.com/dksih/QBM/2017/12/5/1832060792750080/1834248951414784/STEM/cd835af4-d085-41ac-a6ac-8b7c3463d50e.png)
![](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/49556a297991631d8b51ce53ffc9aa07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f6967901d6c855864df01e7bf7a15c.png)
![](https://img.xkw.com/dksih/QBM/2017/12/5/1832060792750080/1834248951414784/STEM/cd835af4-d085-41ac-a6ac-8b7c3463d50e.png)
A.![]() ![]() | B.![]() ![]() ![]() |
C.![]() | D.平面![]() ![]() |
您最近一年使用:0次
2017-12-08更新
|
526次组卷
|
5卷引用:河北省邢台市2017-2018学年高二上学期第三次月考数学(文)试题