1 . 如图,
是平行四边形,
平面
,
,
,
,
.
(1)求证:
平面
;
(2)求证:平面
平面
;
(3)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95475bfc06e884754eb4a455c3f434e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb40aec3a0c136c9f18b9ce5983df73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b5d2943803894bc5d204e75e2d172b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f04edd173055da613832b187737ce4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d31430a87a688a727b86e4001dcb3e6.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356f46276f25c78bab48c1f9447a2a78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8257b6bd25104e07b9ad935c0a3aac4.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdd5861601a5e5aaa35dc70b902fd381.png)
![](https://img.xkw.com/dksih/QBM/2017/4/17/1667603182772224/1667961547694080/STEM/ba8182d8-d3fa-4043-b146-405bc8344c48.png?resizew=255)
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2017-04-17更新
|
1489次组卷
|
3卷引用:2017届天津市红桥区重点中学八校高三4月联考数学(文)试卷
名校
2 . 已知点P(2,-1).
(1)求过P点且与原点距离为2的直线l的方程;
(2)求过P点且与原点距离最大的直线l的方程,最大距离是多少?
(1)求过P点且与原点距离为2的直线l的方程;
(2)求过P点且与原点距离最大的直线l的方程,最大距离是多少?
您最近一年使用:0次
2017-12-04更新
|
518次组卷
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7卷引用:天津市静海县第一中学、杨村一中、宝坻一中等六校2017-2018学年高二上学期期中联考数学试题
名校
3 . 如图,四棱锥
的底面
为正方形,
⊥底面
,
分别是
的中点,
.
![](https://img.xkw.com/dksih/QBM/2017/2/16/1625336084996096/1625939912130560/STEM/654f49ca99644e499104b2e9642dc89f.png?resizew=205)
(Ⅰ)求证
∥平面
;
(Ⅱ)求直线
与平面
所成的角;
(Ⅲ)求四棱锥
的外接球的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e61620a272dada8d4b9a9fab6379dfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b96dce1ec94eb90c243b2eddb78476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/056fb92933841611fffddc66bd7bf236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d001be02aec8fa6d094a80d0115430ff.png)
![](https://img.xkw.com/dksih/QBM/2017/2/16/1625336084996096/1625939912130560/STEM/654f49ca99644e499104b2e9642dc89f.png?resizew=205)
(Ⅰ)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7609a1407f1e965fc9f1235552dcf9e.png)
(Ⅱ)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4da035673ef0edcfae6b72fb5e5ba34a.png)
(Ⅲ)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.png)
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13-14高二上·安徽宿州·期中
名校
4 . 有一圆与直线
相切于点
,且经过点
,求此圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66ca1a0c83eb6a2058ae381c5775830a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73182f6cdad89fe9ffe8871683e8788e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79485e42b7546ccfa3cd6d08491460f.png)
您最近一年使用:0次
2016-12-02更新
|
1356次组卷
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5卷引用:【全国百强校】天津市耀华中学2017-2018学年高二上学期期末考试数学(理)试题2
名校
5 . 已知圆
的圆心在直线
:
上,与直线
:
相切,且截直线
:
所得弦长为6
(Ⅰ)求圆
的方程
(Ⅱ)过点
是否存在直线
,使以
被圆
截得弦
为直径的圆经过原点?若存在,写出直线的方程;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baabfd32465e9e50409413d9c1358279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9720f48471ba4fe16e06f6248b1a6a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45a852d7c0d181966ac42e482475278a.png)
(Ⅰ)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b0fc22034c9db29b23c4cf9faf5af6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2017-11-25更新
|
750次组卷
|
2卷引用:天津市第一中学2017-2018学年高二上学期期中考试数学(文)试题2
6 . 如图,在四棱锥
中,底面四边形
是矩形,
平面
,
分别是
的中点,
.
(1)求证:
平面
;
(2)求二面角
的大小;
(3)若
,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/411b38a18046fea8e9fab1f9f9b80a5f.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/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac4ee9a98647379757a6f643fb73438.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f6967901d6c855864df01e7bf7a15c.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d46554105150391e671609fc6348a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf12905647aeeded72bbca21a63f319.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d9f756419912dd298a0d6857130c80.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553d0677313f0e93008bc0c728060074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2017-11-14更新
|
954次组卷
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4卷引用:天津市和平区2017-2018学年高二上学期期中质量调查数学试题
天津市和平区2017-2018学年高二上学期期中质量调查数学试题重庆市南岸区2019-2020学年高二上学期期末数学试题吉林省长春市长春外国语学校2022-2023学年高一下学期6月月考数学试题(已下线)专题训练:空间线线角、线面角、面面角求解精练30题-同步题型分类归纳讲与练(人教A版2019必修第二册)
名校
7 . 如图,在直三棱柱
中,
是
的中点,
是
的中点.
与
所成的角;
(2)求证:
;
(3)求二面角
的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdfcc3db96b8ee87b5023cbf96f2fa65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf988e2ef75c0df849594e07f86c76b.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74682b0dddedd67e31b3ecae3304559d.png)
您最近一年使用:0次
2018-06-18更新
|
746次组卷
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5卷引用:天津市耀华中学2018届高三上学期第一次月考数学(文)试题1
天津市耀华中学2018届高三上学期第一次月考数学(文)试题1(已下线)《高频考点解密》—解密15 空间中的平行与垂直(已下线)解密14 空间中的平行与垂直-备战2018年高考文科数学之高频考点解密(已下线)解密14 空间中的平行与垂直 (讲义)-【高频考点解密】2021年高考数学(理)二轮复习讲义+分层训练单元测试B卷——第八章?立体几何初步
解题方法
8 . 如图,直三棱柱
中,
,
,
分别是
的中点,求证:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/2/9b116bfe-889d-4383-989e-5545f26204b2.png?resizew=146)
(1)
平面
;
(2)
;
(3)平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33de9b94a20b9d6ea37cfe135d790801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1515a445310d259a080d02e16c2e58e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/601050d23e9d0b81ee6c5eda991dbdf9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/2/9b116bfe-889d-4383-989e-5545f26204b2.png?resizew=146)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eadc76eecc537dec6a34ee1b2bc722c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b7b7793d29d66dfdd89e7a6564a35c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1a878c1222ccf2d1ee808df1a333bb.png)
(3)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbec3bec19a3880111a39a482ea5ba5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9593b5bde2cef14d5ca46973420f62b.png)
您最近一年使用:0次
名校
解题方法
9 . 如图,在三棱锥
中,
是边长为1的正三角形,
,
.
![](https://img.xkw.com/dksih/QBM/2020/2/13/2398365843947520/2399460610719745/STEM/40cce10b92dc4bab90d2a74bfc1724ac.png?resizew=234)
(1)求证:
;
(2)点
是棱
的中点,点P在底面
内的射影为点
,证明:
平面
;
(3)求直线
和平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c24b7a9466a1e35328a8a4b1ba7fa84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d60df9713216819939438d60fdc3e3f.png)
![](https://img.xkw.com/dksih/QBM/2020/2/13/2398365843947520/2399460610719745/STEM/40cce10b92dc4bab90d2a74bfc1724ac.png?resizew=234)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccbd1316b9d1f0c1e71fd078deec61f6.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e35a6cf772fbe75c29b6c27193b3c9a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
您最近一年使用:0次
10 . 已知圆
,
是
轴上的动点,
分别切圆
于
两点.
(1)若
,求切线
的方程;
(2)求四边形
面积的最小值;
(3)若
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729dc093b99754d777686566b846f636.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92ca520748c8b8d3878fb112a89ada7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/451fc6e4248b63e70595f23842f06c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92ca520748c8b8d3878fb112a89ada7d.png)
(2)求四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e102c737a3878b7d88d8e3464793841.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8905b266c8bb5950132ab89ea973fc3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2dca049735b45fb9b2533c68605eddc.png)
您最近一年使用:0次
2018-01-02更新
|
428次组卷
|
3卷引用:天津市静海县第一中学、杨村一中、宝坻一中等六校2017-2018学年高二上学期期中联考数学试题