如图,在直三棱柱
中,
,
,
,
,点D为棱AB的中点,点E为棱
上一点.
(1)证明:
;
(2)求三棱锥
的体积;
(3)求直线
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f3e58edd1f900ca82bb2a3058293f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/19/363780c6-cfca-419c-918e-1dbfaedb6699.png?resizew=178)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b4cdc3a083d1263634d510f172dab09.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56625da5e08d524024b309c443c27147.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
22-23高一下·河南商丘·阶段练习 查看更多[4]
河南省商丘市、周口市部分学校2022-2023学年高一下学期阶段性测试(四)数学试题(已下线)期末模拟卷(B卷·能力提升卷)-【单元测试】河南省周口市2022-2023学年高一下学期期中数学试题(已下线)海南省首都师范大学附属昌江矿区中学2022-2023学年高一下学期第二次(6月)月考数学试题
更新时间:2023-05-27 20:57:31
|
相似题推荐
解答题-作图题
|
适中
(0.65)
解题方法
【推荐1】如图,四棱柱
,底面
为等腰梯形,
;
,侧面
底面
.
![](https://img.xkw.com/dksih/QBM/2020/5/21/2467731242745856/2468804215791616/STEM/cf651cc2-4ebd-4b92-b130-7aea6d578c14.png)
(1)在侧面
中能否作一条直线使其与
平行?如果能,请写出作图过程并给出证明;如果不能,请说明理由;
(2)求四面体
的体积.
![](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/db2ac8ca651ad44f097f3b3899835e3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2c01cd6aeee3287c8594fd280ddcb12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a2e10a5aebe40a9018d5ee3ade7af8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2020/5/21/2467731242745856/2468804215791616/STEM/cf651cc2-4ebd-4b92-b130-7aea6d578c14.png)
(1)在侧面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)求四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abe68d0af6bea7c5664678e6418170ba.png)
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【推荐2】在长方体
中,E为
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/05162fab-2988-47c8-a71c-9a7c89f32c3e.png?resizew=177)
(1)求三棱锥
的体积;
(2)求异面直线
与
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db320e033e0642dda04a49a5435ee875.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/05162fab-2988-47c8-a71c-9a7c89f32c3e.png?resizew=177)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f73a0ca4e6c794242489066fddb6c5.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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解答题-证明题
|
适中
(0.65)
【推荐1】在三棱台
中,面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
面
,
,
,
,
,
为
中点.
面
;
(2)求直线
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/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b840161ff5095ff6312d807876f5d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e9ef3e849788645552cfb0735d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e06ad100c143a6a43ed1dfd07c411880.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea757c19148fbebb6fb9fc86f34621c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d13793af05742c91532f43727eb9780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
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解答题-证明题
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适中
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名校
【推荐2】如图放置在水平面上的组合体由直三棱柱
与正三棱锥
组成,其中,
,且
,
.
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/b5942a3e-1793-4b74-98d1-186d724a2379.png?resizew=243)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦;
(3)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c41ffdaecfb3c73d403179e5745c71a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4957406b21df59fdf7fa184752287b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/b5942a3e-1793-4b74-98d1-186d724a2379.png?resizew=243)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1d2e0f281222a5f289ea4008370aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f233b375753611ffa7a93c2c12ef5e28.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd680b3e2aeaba55e0b3b2486a0a3a8.png)
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解答题-证明题
|
适中
(0.65)
【推荐3】如图,在
中,
,
,
,沿中线AD将
翻折成
使得
,F为AD的中点.
![](https://img.xkw.com/dksih/QBM/2022/2/14/2916408110129152/2920271431188480/STEM/663b766d-fd7c-4215-8672-f8d2e436c482.png?resizew=224)
(1)求证:
;
(2)求直线BF与平面BDE所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68e744f480e11f588570c5d6738799f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4a514e2e338c6fa31c9938624a4a71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cb3e973f4e9361e1d23a0ab56006d12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aacfe9a00440bad0cc2b3563867b05f0.png)
![](https://img.xkw.com/dksih/QBM/2022/2/14/2916408110129152/2920271431188480/STEM/663b766d-fd7c-4215-8672-f8d2e436c482.png?resizew=224)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb91cb9a5a14169845d700fbd95890ac.png)
(2)求直线BF与平面BDE所成角的正弦值.
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解答题-证明题
|
适中
(0.65)
解题方法
【推荐1】如图,在三棱柱ABC﹣A1B1C1中,四边形ABB1A1为正方形,四边形AA1C1C为菱形,且∠AA1C=60°,平面AA1C1C⊥平面AB1BA1,点D为棱BB1的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/36aea0f0-5e9f-4266-b086-5796ce9cfa41.png?resizew=163)
(1)求证:AA1⊥CD;
(2)棱B1C1(除两端点外)上是否存在点M,使得二面角B﹣A1M﹣B1的正弦值为
,若存在,请指出点M的位置;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/36aea0f0-5e9f-4266-b086-5796ce9cfa41.png?resizew=163)
(1)求证:AA1⊥CD;
(2)棱B1C1(除两端点外)上是否存在点M,使得二面角B﹣A1M﹣B1的正弦值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64e76a4c1e5934f51cdca2ffbc8313f.png)
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解答题-证明题
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名校
【推荐2】如图,在四棱锥中,平面
平面
,
,
,
,
,
.
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9104a1941e557a85fd1496bc2b9be297.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
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解答题-证明题
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适中
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名校
【推荐3】如图所示,
是正方形,
是正方形的中心,
底面
,底面边长为
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/4b795804-e9c1-44a7-b15f-f1696dce94ec.png?resizew=214)
(1)求证:
平面
;
(2)若
,求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/4b795804-e9c1-44a7-b15f-f1696dce94ec.png?resizew=214)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c2b786c64e6a9ed2ec5670cde74f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bb8951a7fb024b3979e664d653e54dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d682fd0344452998187cb6d48de3dd1.png)
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