如图,在正三棱柱
中,底面
的边长为1,P为棱
上一点.
,P为
的中点,求异面直线
与
所成角的大小;
(2)若
,设二面角
、
的平面角分别为
、
,求
的最值及取到最值时点P的位置.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1a56baf43ffdf67bc8460856e31fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ad3a1ea6790177130e16c2124984087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb543b7ff842d6f848dfd6d1c55171b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97604769e3729e3a4d97745fd782dbe8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5a2fd95dfda3f70bc2d9fcd8380bf99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dba104e3e9519e820ac70b7addcc0d8.png)
23-24高二上·上海黄浦·期末 查看更多[4]
上海市黄浦区2023-2024学年高二上学期期末调研测试数学试卷广东省中山市第一中学2024届高三第一次调研数学试题(已下线)第八章 立体几何初步(二)(知识归纳+题型突破)(2)-单元速记·巧练(人教A版2019必修第二册)(已下线)第八章 立体几何初步 单元复习提升(易错与拓展)(2)-单元速记·巧练(人教A版2019必修第二册)
更新时间:2024-01-11 10:20:12
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相似题推荐
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐1】已知锐角三角形
中,角
,
,
的对边分别为
,
,
.
(1)若
,求
;
(2)试比较
与
的值得大小关系并给出证明;
(3)若
,试判断
是否存在最大,最小值?若存在,请分别求出.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19677d3c2e3c2a18d04d566319d8f85e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)试比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/031345f8b2b8c802b261f1146b1355fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae3b17b3d5aaa589880ca527893db775.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f85678de64dcc06b3efcdb6a127170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6726bd0280c19fc77d6213166a97793.png)
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解答题-问答题
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适中
(0.65)
【推荐1】在三棱锥
中,
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/3/10/2933409715191808/2935357940195328/STEM/333636ebf48c4c82a32570823a1adacc.png?resizew=158)
(1)求三棱锥
的体积;
(2)求异面直线AC与BD所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd95dc30c0344788b94289c464a3158e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209acf15985d1ea1ad86fc4a37e38c0b.png)
![](https://img.xkw.com/dksih/QBM/2022/3/10/2933409715191808/2935357940195328/STEM/333636ebf48c4c82a32570823a1adacc.png?resizew=158)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
(2)求异面直线AC与BD所成角的余弦值.
您最近一年使用:0次
【推荐2】如图,长方体
中,
,
,
,点
是棱
上一点.
(1)当点
在
上移动时,三棱锥
的体积是否变化?若变化,说明理由;若不变,求这个三棱锥的体积;
(2)当点
移动到
中点时,求直线
与
成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1a56baf43ffdf67bc8460856e31fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/29/e2be33d0-0745-459d-a29b-27493e989041.png?resizew=192)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3b2a41ec718ad3d6e21ceadd616215e.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dc61d5de97b5a40be925b278ae494c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
解题方法
【推荐1】如图,四边形ABCD为正方形,ED⊥平面ABCD,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c926280e397a9bff3b5f17b06371b6d6.png)
(1)证明:EA∥平面BCF;
(2)证明:平面EAC⊥平面FAC.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c88ac0eb1df661709d1316a3786cf49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c926280e397a9bff3b5f17b06371b6d6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/13/3cba36cf-d784-4ef2-bcdd-85c47353685c.png?resizew=157)
(1)证明:EA∥平面BCF;
(2)证明:平面EAC⊥平面FAC.
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解答题-证明题
|
适中
(0.65)
【推荐2】如图,在三棱柱
中,平面
平面
,侧面
是边长为2的正方形,
,
,
、
分别为
、
的中点
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/0aa48046-4b4a-47c5-844c-74a48258237f.png?resizew=160)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f8fe8825d13ec4eb7a4c4bfbd146167.png)
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cdaadeae37736a1e6dd93fa1fe712f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf7006c4656d9d3da3abc7910da60d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4fcf607b0710d12aaabd17fd053d83.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/0aa48046-4b4a-47c5-844c-74a48258237f.png?resizew=160)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f8fe8825d13ec4eb7a4c4bfbd146167.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1dbd61d2e4faa956490fa40115d965.png)
您最近一年使用:0次