已知
是底面边长为1的正四棱柱,高
.求:
⑴异面直线
与
所成的角的大小(结果用反三角函数表示);
⑵四面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8456cee87c4e22351affc28f3a73a0f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
⑴异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
⑵四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66ab6847b1e013d4adabe1aa339fab73.png)
2011·上海·高考真题 查看更多[6]
2011年上海市普通高中招生考试文科数学(已下线)2011-2012学年上海市吴松中学高二年级期终考试数学(已下线)课时44 几何体的表面积与体积-2022年高考数学一轮复习小题多维练(上海专用)上海市大同中学2020-2021学年高二下学期期中数学试题上海市控江中学2022-2023学年高二上学期期中数学试题上海市黄浦区向明中学2023-2024学年高二上学期期中数学试题
更新时间:2016-11-30 22:05:34
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解答题-证明题
|
适中
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【推荐1】我国古代数学名著《九章算术》中记载的“刍甍”是底面为矩形,顶部只有一条棱的五面体.如图,五面体
是一个“刍甍”,四边形
为矩形,
与
都是正三角形,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/67695429-dc53-463b-aaf2-c1f8ae581524.png?resizew=219)
求证:
面
;
求五面体
的体积.
![](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/4ef6a83b5aaabf70cc39c92d7575ff65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cbb52d66335cde25e0ae7d9cebdeffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaca23a15b9d41129981b1d6c1f11f1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/67695429-dc53-463b-aaf2-c1f8ae581524.png?resizew=219)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/617c0467880146e6ff84ebfab44b6b9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e7150576c09ecad608e2d9d054ddeac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
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适中
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名校
【推荐2】如图,在五面体
中,底面
为矩形,
,
,过
的平面交棱
于
,交棱
于
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/1b8f7ed2-8963-41b9-a5b1-e88d618e56c7.png?resizew=155)
(1)证明:
平面
;
(2)若
,
,
,求五面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e89556992cbfd7043330ac7421d342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058f36d315245b63a811d5c6f348c17b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0085ee46fbc2a1d3bd98aec14cd8b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a477603f3f88c3b48352b6130f9ad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/1b8f7ed2-8963-41b9-a5b1-e88d618e56c7.png?resizew=155)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72221ee5b504d596ff799c0b356aa0ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a0d2a2415ec1e1374ac46bc232f450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65ac8eb186c7f68ee35608b306eca420.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee69d2552bd48ff07358fe40f23127de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e89556992cbfd7043330ac7421d342.png)
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适中
(0.65)
【推荐1】在
中,
,斜边
.
以直线
为轴旋转得到
,且二面角
是直二面角,动点
在斜边
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/5/006b5b27-3114-44aa-8b60-393a0cf85ee3.png?resizew=152)
(1)求证:平面
平面
;
(2)当
时,求异面直线
与
所成角的正切值;
(3)求
与平面
所成最大角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c633830c6e2ac6d8d6e18890ef5ee33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b10a7cfa7063078668323401b0084cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c633830c6e2ac6d8d6e18890ef5ee33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/864aa0f490f42c358d1550c99bd81c9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19c1bcb8431ae315ecd29c6478d3eff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/5/006b5b27-3114-44aa-8b60-393a0cf85ee3.png?resizew=152)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95a55c40bb7437081d8e669974c8d1b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc8bc55e0db891bb32a8098c29116d79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
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解答题-证明题
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适中
(0.65)
【推荐2】如图,在四棱柱
中,
平面ABCD,底面ABCD是矩形,
,
,
,M为
的中点.
![](https://img.xkw.com/dksih/QBM/2020/5/27/2471778311413760/2472423995228160/STEM/3ee1cb4d-f1aa-40b3-a36d-8b7259d33c8e.png)
(1)求证:D1M//平面BDC1;
(2)若棱
上存在点Q,满足
与平面
所成角的正弦值为
,求异面直线
与BQ所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f144992e1cbee34868abce1e5ad38c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/462b1c65b1b233ab98a90c164c0968c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://img.xkw.com/dksih/QBM/2020/5/27/2471778311413760/2472423995228160/STEM/3ee1cb4d-f1aa-40b3-a36d-8b7259d33c8e.png)
(1)求证:D1M//平面BDC1;
(2)若棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d41164f8a9f6fe32a9364f18f168dd.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5563473602e1b17d582a165b7b7b6b2.png)
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