在四棱锥
中,底面
是正方形,
平面
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/19/a6d9acc2-9d24-42cd-944b-22b4d51e49ba.png?resizew=164)
(1)证明:
平面
;
(2)若点
在棱
上,且
,在棱
上求一点
,使得
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb2e071d4e01107dcf7d95cbb86b415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bcf7a925f7fee36ddd438bf4c102900.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/19/a6d9acc2-9d24-42cd-944b-22b4d51e49ba.png?resizew=164)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1ea0adc03fc8ba355dbdac586f4b707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/599e9dbe4b870f932af04f0f3f76ada5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4db9b82b67efe45a02fca32bfcf5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb32cbf5e2d772fa9d90b4d80d3680f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb10d645970e5860afd3430957fab6c.png)
23-24高二上·湖北孝感·期中 查看更多[2]
湖北省孝感市2023-2024学年高二上学期11月期中考试数学试题(已下线)模块一 专题2 利用空间向量解决立体几何问题 (讲)1 期末终极研习室(2023-2024学年第一学期)高二人教A版
更新时间:2023-11-21 16:40:21
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相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,四棱锥
中,平面
平面
是
中点,
是
上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/31/385bb6e7-307f-4a02-bfc7-f07e2d3217ff.png?resizew=209)
(1)当
时,
(i)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
平面
;
(ii)求直线
与平面
所成角的正弦值;
(2)平面
与平面
夹角的余弦值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5bad018b4872290d8290594ca2ec6d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/31/385bb6e7-307f-4a02-bfc7-f07e2d3217ff.png?resizew=209)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7cfb82de90bf456115589cc5b0f8bd5.png)
(i)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(ii)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1885efcff0b903e314057dd153578600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b1e52dfd144ab4afda4d4aa5a92c1f.png)
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【推荐2】如图,在四棱锥
中,底面ABCD是正方形,顶点P在底面ABCD的射影是正方形ABCD的中心,E为PC的中点.
![](https://img.xkw.com/dksih/QBM/2022/5/6/2973651427590144/2977366682722304/STEM/17195eb4-d1a0-46b3-89a6-f2a05ec7788e.png?resizew=212)
(1)证明:
平面BDE;
(2)若
是边长为2的等边三角形,求点A到平面BDE的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://img.xkw.com/dksih/QBM/2022/5/6/2973651427590144/2977366682722304/STEM/17195eb4-d1a0-46b3-89a6-f2a05ec7788e.png?resizew=212)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c2b786c64e6a9ed2ec5670cde74f86.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
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名校
【推荐1】如图,正方体
中,
,
,
分别为
,
,
的中点.
(Ⅰ)证明:
;
(Ⅱ)在棱
上是否存在一点
,使得
平面
?若存在,求出点
的位置;若不存在,请说明理由.
![](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/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0881a4b8ff10df42d4f092b58035864a.png)
(Ⅱ)在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbafedc202bd0d86c4dfdece9f8f4fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89c29feccd507e45d2012a5f26cca7b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/2017/4/30/1676775152320512/1678619915206656/STEM/347b21168c2049bda272b1ee53048692.png?resizew=159)
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解题方法
【推荐2】如图,在四棱台
中,底面四边形
为菱形,
,
,
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/b356c562-c7f0-47f5-a6c2-3f8803183605.png?resizew=176)
(1)若点
是
的中点,求证:
;
(2)设棱
上靠近
的四等分点为
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90301105ac42d03dd051753436169f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/b356c562-c7f0-47f5-a6c2-3f8803183605.png?resizew=176)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e87a48373fec0d84a3cda27fbd33e7e.png)
(2)设棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54ad0edb590fa1cc97383714f87cbda6.png)
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【推荐1】如图所示,已知等腰直角三角形RBC,其中∠RBC=90°,RB=BC=2.点A,D分别是RB,RC的中点,现将△RAD沿着边AD折起到PAD位置,使PA⊥AB,连接PB,PC.
![](https://img.xkw.com/dksih/QBM/2019/4/15/2182859475075072/2183264968081408/STEM/a2a12376ca3e434aa4af12627aff047c.png?resizew=158)
(1)求证:AD∥面PBC;
(2)求二面角A-CD-P的余弦值.
![](https://img.xkw.com/dksih/QBM/2019/4/15/2182859475075072/2183264968081408/STEM/a2a12376ca3e434aa4af12627aff047c.png?resizew=158)
(1)求证:AD∥面PBC;
(2)求二面角A-CD-P的余弦值.
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解题方法
【推荐2】如图,在直三棱柱
中,
,
,三棱锥
的体积为
,点D为
的中点.
平面
;
(2)求直线CD与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883fc5e3faf39829d60804b59deb1730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38593653bedb845ecfa820806a29a1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0467b0675c3ecfb282cc88255284d3e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17580410bf63dba4fe164265afaac4cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
(2)求直线CD与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
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【推荐3】已知矩形
所在的平面与直角梯形
所在的平面垂直,
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/ba8e8e34-7a9c-4b4b-a04a-6186fbd7d15b.png?resizew=158)
(1)求证:
;
(2)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6a255f43ca532e74004e48636edc509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91d22e0d56216db87f3961a08670969d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/ba8e8e34-7a9c-4b4b-a04a-6186fbd7d15b.png?resizew=158)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51246bfbcf524ed6da2eceec37712470.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
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【推荐1】如图,在多面体
中,四边形
是边长为
的正方形,平面
平面
,
,
,
.
(1)求证:
平面
;
(2)求平面
与平面
夹角的余弦值;
(3)线段
上是否存在点
,使得
平面
?若存在,指出点
的位置并证明;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c1acdd27cebb11e0266464b03b3afb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8139d9fd5c670c91aa7dc485366dd1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e41916523511064a97de39b0f2b323.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5e5c1b19afa9febdef52968bd55a320.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/22/886d39e6-9812-4d18-a1a9-4db4c413ccc3.png?resizew=136)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(3)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12d8677ae5ca7acf874d93789425d172.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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名校
【推荐2】已知在四棱锥P-ABCD中,底面ABCD是边长为4的正方形,△PAD是正三角形,平面PAD⊥平面ABCD,E、F、G分别是PA、PB、BC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/14/0928700a-bae5-44c8-b821-1598711edcbe.png?resizew=200)
(1)求证:EF⊥平面PAD;
(2)求平面EFG与平面ABCD所成二面角的夹角的余弦值;
(3)线段PD上是否存在一个动点M,使得直线GM与平面EFG所成角为
,若存在,求线段PM的长度,若不存在,说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/14/0928700a-bae5-44c8-b821-1598711edcbe.png?resizew=200)
(1)求证:EF⊥平面PAD;
(2)求平面EFG与平面ABCD所成二面角的夹角的余弦值;
(3)线段PD上是否存在一个动点M,使得直线GM与平面EFG所成角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
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