名校
解题方法
1 . 如图,已知直三棱柱
中,
且
分别为
的中点,
为线段
上一动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/93577e24-2083-4d3e-9590-6c34f2c17a7c.png?resizew=138)
(1)求
与平面
所成角的正切值;
(2)求点
到平面
的距离;
(3)求锐二面角
的余弦值的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a9ad711b25c36dae0c2a2cedff9954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e53bde928275ba6269c58754870b66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b578b4454bdaca362252d9283fcca2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/93577e24-2083-4d3e-9590-6c34f2c17a7c.png?resizew=138)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/456175ea34492f0bc025aaab668fa659.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481a69ce98c49013db26c6c7da7a0562.png)
(3)求锐二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34d9892555bfe67259e3e5a1fff78976.png)
您最近一年使用:0次
名校
解题方法
2 . 在三棱锥
中,
平面
,
分别是
和
边的中点.
(1)求二面角
的余弦值;
(2)在线段
上是否存在一点
,使
?若存在,请指出
点的位置,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ceb51fad846c4a3037bce3543c9101b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/aa7490bf-dfe5-441a-9451-8011d6e613dd.png?resizew=189)
(1)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e685dde92d0192739da59f6e43b808e3.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e32cf73c01995c91c3523fa11b3bd7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
名校
解题方法
3 . 如图,在棱长为的正方体
中,
为线段
的中点,
为线段
上的动点,则下列四个命题中正确命题的个数是( )
①存在点,使得
②不存在点
,使得
平面
③三棱锥的体积是定值 ④不存在点
,使得
与
所成角为
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-11-14更新
|
515次组卷
|
4卷引用:第3章 空间向量及其应用(压轴题专练)-2023-2024学年高二数学单元速记·巧练(沪教版2020选择性必修第一册)
(已下线)第3章 空间向量及其应用(压轴题专练)-2023-2024学年高二数学单元速记·巧练(沪教版2020选择性必修第一册)北京市第十五中学2023-2024学年高二上学期期中考试数学试题(已下线)专题04 异面直线所成的角(期末选择题4)-2023-2024学年高二数学上学期期末题型秒杀技巧及专项练习(人教A版2019)(已下线)第二章 立体几何中的计算 专题六 空间定值问题 微点3 立体几何中的定比问题【培优版】
名校
解题方法
4 . 四棱锥
中,底面四边形
是直角梯形,
,
,
平面
,且
,
.
(1)求
与平面
所成角的大小;
(2)求平面
与平面
所成的锐二面角大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7cc8f80ce821d56e3a692d02583d675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60096d11a222426d712390d3aad75ff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c72088bc8e553bd69d135d19adf5c550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc56a98d9e55e8bad5f119cfb704d79c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3504a5eb64e8890790e3b258e03276a2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/e954433d-18d1-48a0-8d04-7af3ddd30af4.png?resizew=154)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f457418e6a7e21f0ed0bf490a3709c.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83efd6afec2f73c52e4b027a12d9f817.png)
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名校
解题方法
5 . 《九章算术商功》:“斜解立方,得两斩堵.斜解暂堵,其一为阳马,一为鳖臑期马居二,鳖臑居一,不易之率也.合两鳖臑三而一,验之以棊,其形露矣,”刘徽注:“此术臑者,背节也,或曰半阳马,其形有似鳖肘,故以名云.中破阳马,得两鳖臑,鳖臑之起数,数同而实据半,故云六而一即得.”
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/22be5488-df03-4b86-b13d-59b15d153cdb.png?resizew=429)
如图,在鳖臑
中,侧棱
底面
;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/e5f13f94-eefa-48cc-a48d-91c398275c1f.png?resizew=297)
(1)若
,
,
,
,求异面直线
与
所成角的余弦值;
(2)若
,
,点
在棱
上运动.求
面积的最小值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/22be5488-df03-4b86-b13d-59b15d153cdb.png?resizew=429)
如图,在鳖臑
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/e5f13f94-eefa-48cc-a48d-91c398275c1f.png?resizew=297)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9c7cbcc38b28d45c8539710e5b260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e1ab67f8e48ad3340cf9d165cd75f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acee03d4bb4667b6c345221b6c9b0fa4.png)
您最近一年使用:0次
名校
解题方法
6 . 四面体
的所有棱长均为2,则二面角
的大小为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec2524be492bca0d1566bf848066f10.png)
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23-24高二上·全国·课后作业
解题方法
7 . 已知四边形
为矩形,
平面
,设
,则平面
与平面
夹角的余弦值为________ .
![](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/1bcaa6d9148ced2faff56bb58b8c0718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb5255e2159617505e0c87d01437a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd3bd9c2db8c9f3cb8c6c7d7cbf5465.png)
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8 . 如图,直三棱柱
的底面是等腰直角三角形,
,
.
(1)证明:
;
(2)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/446091491fb55549972f35a206fcab1e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/4a1fb98d-c6a2-486b-a750-88c94b638422.png?resizew=132)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47af45fbf1714055d9b414a44a8613fa.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a824c242050a27d9da3bb3276ea99170.png)
您最近一年使用:0次
名校
9 . 如图,在直三棱柱
中,
,
,
,
分别为
,
的中点.
(1)证明:
平面
;
(2)求直线
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ba708880f5eb782acbf2c961c2494c.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/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/14/3c02a268-b540-4de8-9ca1-7c9dc963e6f5.png?resizew=147)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec47f6d6cb1eeefbb466e4fe71fd568c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
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名校
解题方法
10 . 在苏州博物馆有一类典型建筑八角亭,既美观又利于采光,其中一角如图所示,为多面体
,
,
,
,
底面
,四边形
是边长为2的正方形且平行于底面,
,F、G分别为
、
的中点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/18763d80-75d8-450e-949b-51307fda13b6.png?resizew=346)
(1)证明:
∥平面
;
(2)求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec0e2520e59b84f04eb76726a15232d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7bd02e0adeae92ba9526261b1baf797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/542b5bc10c7341c04c22244f3ec16e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03733d1465d041a6d6da32bf91a7cff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f3392a792c219bf3f365281ad9bb70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dc61d5de97b5a40be925b278ae494c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1859959fdb4c5edd8056893f94a10a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c17f51dc3fef138f51b5e9c328edf93b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1a56baf43ffdf67bc8460856e31fec.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/18763d80-75d8-450e-949b-51307fda13b6.png?resizew=346)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87448e09eaa816e50ae92d111d5ded6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e31228c7fd89c98d6235ad993d51d413.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e31228c7fd89c98d6235ad993d51d413.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
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