23-24高三上·上海浦东新·开学考试
名校
解题方法
1 . 活动场地的“得地率”是指可供人活动的区域的占地面积与总占地面积之比.某大型商场欲将地下一层的一块半圆形空地改建为亲子乐园,建造一个供亲子游玩的海洋球池和两个大小完全相同的休息区,供人们休息和娱乐.除海洋球池和休息区外的剩余空地全部用气垫筑起高墙作为防护.如图,设半圆形空地的圆心为
,半径为
为直径,矩形海洋球池
的顶点
在
上,顶点
在半圆的圆周上,矩形休息区
和
的顶点
在
上,顶点
在半圆的圆周上,顶点
分别在线段
上.已知
,设
.
(1)当
时,求亲子乐园可供人活动区域的面积
;
(2)为使亲子乐园的“得地率”最大,求
的取值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5422148ab07e809f7df74d0c322b27ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c29a7e8eea08197bf53164a560bee58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7ee0ef8945ba1b90e59aed7cab889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc8cedba8cf78fb20381c72e9b5f6b06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aaca640804990a67999d69918cfc0a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9d014faa51e470534e519617672847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9fd4f55e38217c37fd835bb3916f46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c8b21a087818284c9cd909cc56c814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d777a41834c51955d719bd68e7bd45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216f9d2e571371442770ce5e3e4d6e4a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/7/eb16b2c1-b39b-498d-91ce-0dcd84e7eb1d.png?resizew=214)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905dd10639c9fef5ef8d66a124756140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(2)为使亲子乐园的“得地率”最大,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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解题方法
2 . 如图,在正方体
中.
(1)求异面直线AC与
所成角的大小;
(2)求证:
;
(3)求二面角
平面角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/9/f7cc5cc1-0f28-42fb-b836-d741671c1fc6.png?resizew=152)
(1)求异面直线AC与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a0e00113872f921116b6c0c3177d0f.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec99f21b5368bf8776e62003c12dd705.png)
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2023-08-09更新
|
442次组卷
|
2卷引用:新疆阿拉山口市中学2023-2024学年高二上学期开学考试数学试题
解题方法
3 . 在正方体
中,
是
的中点,则直线
与平面
所成的角大小为___________ (结果用反三角函数表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f348ed8a1690d3ed02aa64459ca50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8a10b564f58792b4be1e33aeaa7a88.png)
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4 . 设
,则向量
与
的夹角为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab54cb2300e0cfbacf9464d6531f822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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5 . 直线
(
为常数,且
),则直线倾斜角![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9251dff989f7d60db751b73033dee269.png)
________ (结果用反正切表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cff0bbf16b63e3ee0d68f2ab8f9236d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94ed37ee7432002cd0e0978b2012e184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9251dff989f7d60db751b73033dee269.png)
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解题方法
6 . 已知正三棱锥
的底面边长为2,
,
,
中点分别为D,E,则直线
、
的夹角为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b4c1ae9c57d51e27bbdb001122d3bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.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/9d78abbad68bbbf12af10cd40ef4c353.png)
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7 . 函数
的值域为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36cfe72f38760ef2387f6689a2897818.png)
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8 . 函数
的反函数为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83aa59fe91fa9496c1b0e3d702f4bf78.png)
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9 . 设直线
过点
,且与直线
的夹角为
,则直线
的方程是________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a297f399ee48fe07cd6aacc935a1c46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb009df39028efcbb5ad46bd53dbac2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98d1b851eb0c6a8a3c64e7dcafd59dcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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10 . 设
,则“
”是“
”的________ 条件
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc2f793161e83a8882e31edb3302793c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5140b2db2feca5bd88682409baf2acf0.png)
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