22-23高三上·北京·开学考试
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解题方法
1 . 在下列关于
的四个条件中选择一个,能够使角
被唯一确定的是:( )
①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5667c716bb1f451feff739b10f337646.png)
②
;
③
;
④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5667c716bb1f451feff739b10f337646.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c9edc7904af0f3cd047ab4de28e807e.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da11ccc95f0afaccb9c637a1582ea4d0.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0b566ad3c11f1f7114c2ab7cd75abb5.png)
A.①② | B.②③ | C.②④ | D.②③④ |
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2022-09-11更新
|
1437次组卷
|
6卷引用:北京市第四中学2023届高三上学期开学测试数学试题
(已下线)北京市第四中学2023届高三上学期开学测试数学试题北京市朝阳区2023届高三一模数学试题查漏补缺练习 (2)上海市格致中学2022-2023学年高二上学期10月月考数学试题(已下线)专题4-2 正余弦定理中的高频小题归类-1(已下线)第04讲 解三角形(八大题型)(讲义)-2(已下线)第六章 平面向量及其应用(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)
2 . 某人从家开车上班,有甲、乙两条路线可以选择,甲路线上有3个十字路口,在各路口遇到红灯的概率均为
;乙路线上有2个十字路口,在各路口遇到红灯的概率依次为
,
.假设在各路口是否遇到红灯是相互独立的,遇到红灯停留的时间都是
.
(1)若走甲路线,求该人恰好遇到1个红灯的概率;
(2)若走乙路线,求该人在上班途中因遇红灯停留总时间X的分布列和期望;
(3)若只考虑路口遇到红灯停留总时间最少,该人选择甲路线还是乙路线?(只写出结论)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9504a819e9225ac8743c8c0809492370.png)
(1)若走甲路线,求该人恰好遇到1个红灯的概率;
(2)若走乙路线,求该人在上班途中因遇红灯停留总时间X的分布列和期望;
(3)若只考虑路口遇到红灯停留总时间最少,该人选择甲路线还是乙路线?(只写出结论)
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3 . 等腰三角形
内接于一个半径为6的圆
.其中
,还有一个圆
与圆
相切,且圆
同时也和
在底边
中点处相切,则圆
的半径是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d363f7aac42c7adf8d2ddf05978d3fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
A.![]() | B.2 | C.![]() | D.![]() |
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4 . 如图,
与
是两个全等的等边三角形,且
.有下列四个命题;①
;②
;③直线
与
垂直;④四边形
是轴对称图形.其中正确结论的个数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/12/e9f032b7-f6d9-446d-a737-411b65e78a83.png?resizew=258)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96645a3530e72d5d733d2c72147d340.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0453cfd7e92bf7746a88280b9e7b580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b855d740d0efb40ee24fc03f2188c251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/12/e9f032b7-f6d9-446d-a737-411b65e78a83.png?resizew=258)
A.1 | B.2 | C.3 | D.4 |
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5 . 小王利用计算机设计了一个计算程序,输入和输出的数据如下表:
那么,当输入数据是
时,输出的数据是( )
输入 | … | 1 | 2 | 3 | 4 | 5 | … |
输出 | … | … |
那么,当输入数据是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 随着通讯市场竞争的日益激烈,某通讯公司的手机市话收费标准按原标准每分钟降低了
元后,再次下调了25%,现在的收费标准是每分钟
元,则原收费标准每分钟为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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7 . 有一张矩形纸片
,按下面步骤进行折叠:
第一步:如图①,将矩形纸片
折叠,使点
,
重合,点
落在点
处,得折痕
;
第二步:如图②,将五边形
折叠,使
,
重合,得折痕
.再打开;
第三步:如图③,进一步折叠,使
,
均落在
上,点
,
落在点
处,点
,
落在点
处,得折痕
,
.
这样,就可以折出一个五边形
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/16/f542cf2b-0c93-4fa8-ac31-578892903940.png?resizew=141)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/16/669fd515-afbb-46a9-8023-86dc67d158c2.png?resizew=141)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/16/6c2b59a9-a749-4b81-9264-bd4b80f19283.png?resizew=141)
(1)适当添加辅助线,请写出图①中三组全等三角形______,______,______;(写出不同的三组即可)
(2)若这样折出的五边形
(如图③)恰好是一个正五边形,当
,
,
①请写出一个
与
的关系式,并加以证明;
②设正五边形的边长
,请求出边长
(用
或
表示
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
第一步:如图①,将矩形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
第二步:如图②,将五边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8149f05bbaf25926ad9ac243a04b482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae72f1da4f5d540dc1e6f42ea08f952e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
第三步:如图③,进一步折叠,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae72f1da4f5d540dc1e6f42ea08f952e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.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/d3b1a5427d8ff23df0f3ec194756c84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f6927cc2a930203ac34366383e76ef.png)
这样,就可以折出一个五边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db24888830edd7df393bf95fde1281e8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/16/f542cf2b-0c93-4fa8-ac31-578892903940.png?resizew=141)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/16/669fd515-afbb-46a9-8023-86dc67d158c2.png?resizew=141)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/16/6c2b59a9-a749-4b81-9264-bd4b80f19283.png?resizew=141)
(1)适当添加辅助线,请写出图①中三组全等三角形______,______,______;(写出不同的三组即可)
(2)若这样折出的五边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db24888830edd7df393bf95fde1281e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42e97eee705d164e6ac6de9ecd6d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c52b857c7ca55dfa6da108df1d3cee2.png)
①请写出一个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
②设正五边形的边长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c21350a49d9229ef239253f7c3d366ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.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/294f5ba74cdf695fc9a8a8e52f421328.png)
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8 . 如图,过
的直角顶点
作圆
,圆
与
的两边
,
分别相切于
,
,并交
边于点
.在优弧
上任取一点
,连结
,
.若
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72ef2a4bf0dc8378f3e71a1ac9d0df4e.png)
![](https://img.xkw.com/dksih/QBM/2022/7/9/3018993180073984/3020168933228544/STEM/8febb545729847b5a8f108adee43eacc.png?resizew=334)
(1)求证:
;
(2)试求
的大小;
(3)计算圆
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f76899b3a0bfbbdae7cb1148ad4bf018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b40c2b0ab8e1cfe5112d428b4b829f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e781a2489271bfd1597cba1bb6f5887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72ef2a4bf0dc8378f3e71a1ac9d0df4e.png)
![](https://img.xkw.com/dksih/QBM/2022/7/9/3018993180073984/3020168933228544/STEM/8febb545729847b5a8f108adee43eacc.png?resizew=334)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff29971ccc633d89832ffa9bd54afa3.png)
(2)试求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1428d4a45e569bc6e39005ea3c9c8ec0.png)
(3)计算圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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9 . 如图.在梯形
中,
,
,
,
,
,在线段
上是否存在点
,使得以
,
,
为顶点的三角形与以
,
,
为顶点的三角形相似?若不存在,请说明理由;若存在,这样的
点有几个?并计算出
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/14/6e3c2eb5-3559-4984-8c5a-482f00efa435.png?resizew=123)
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10 . 规定:
表示不大于
的最大整数.
表示不小于
的最小整数,
表示最接近
的整数(
,
为整数),例如:
,
,
,则下列说法正确的是______ .(写出所有正确说法的序号)
①当
时,
;
②当
时,
;
③方程
的解为
;
④当
时,函数
的图像与正比例函数
的图像有两个交点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c2719fc8914037d61e5bac0e1c5980.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1efe124c3e4a990276cfd12d6e6ecce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c2885c5aea049f79db1faa99f1c40ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d54a0e82778f606d95a486835ac9f56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/618dd2aa80e1defb90ffbb5608a22799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b3296a94b5421bf78627de2130d27b4.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc6d451543676efed0aaa864b953f0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fafc35c5b505364926a2be4569ff54.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6561e832adb14d1bc6f0858081642a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe8776a5e467bc6c363b97c8d6b0440.png)
③方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9943f6f6f70592cf3617bb14204172b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82bb2030f782a73d448466c38700e57f.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b88e53e6ca674b4cb92ba78dddf989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b82c8c08709916bb2ff112bd1d5978ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23afc43a8c5b8cfe6bf2a1caed920c01.png)
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