名校
1 . 小明在一段斜坡
上进行跑步训练.在训练过程中,始终有一架无人机在小明正上方随他一起运动,无人机速度为
,距水平地面的高度总为
(在直线
上运动).现就小明训练中部分路段作出如图函数图象:已知
点坐标是
,斜坡
的坡角为
.
上的跑步速度.
(2)求
段
关于
的函数解析式;
(3)若小明沿
方向运动,求无人机与小明之间距离不超过
的时长.(参考数据:
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f037cf514f9f12ec2f7ad6eb409856.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbae9b64d5a3a42931dc41c32fc4bb75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b749f9acb5f0de709a1709bbdd42614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c6efd24d7b6da440b81b75166bbf80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce6c3d6874f9c06e693b64b2b40d610.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbe53cbaa36cecf802efc9e81e9937ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)若小明沿
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75b5e1433d7c2ad6a5b2de8a557a43d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167e6e41ac221847824a72e964f340f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0af7b2d62b94466387c8a15ab0b7350a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d57ac09088f0dbed7e217d2a9bc037.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7730adb728a84231d6a03c6d88779504.png)
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2 . 如图是某货站传送货物的平面示意图,为了提高传送过程的安全性,工人师傅欲减小传送带与地面的夹角,使其由
改为
,已知原传送带
长为4米.(计算结果精确到0.1米,参考数据:
,
,
,
,
,
)
的长度.
(2)如果需要在货物着地点C的左侧留出2米的通道,试判断距离B点4米的货物
是否需要挪走,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36581140ebac5d28438ea63b1b23b65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31a14bd2a972f43d7a26a99589ad083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94389d0f199119e43d35bc6249f1a14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56a3e48a63eb65952fbf9bf39c590ddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d995a8af067807d765133a2436cad7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3097c385f3421e457f9232690ad0dc16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59ae32a2c3ce860153288435be492e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f441d98ac4f433d3aab3b2e4111d86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)如果需要在货物着地点C的左侧留出2米的通道,试判断距离B点4米的货物
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db492efc6bfe199d47633e6d5946ad57.png)
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名校
3 . 如图,在坡度为
的山坡上种树,已知
,相邻两树
的坡面距离为10米,则两树的水平距离
为__________ 米.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2450156c6f081864f1efcf10af156e47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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4 . 小明沿着坡度
的斜坡向上行走了26米,则他距离地面的垂直高度升高了______ 米.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1852175af2bff405159bc6b574dcb9f.png)
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5 . 如图,在坡比为
的斜坡上有一电线杆
.某时刻身高1.7米的小明在水平地面上的影长恰好与其身高相等,此时电线杆在斜坡上的影长
为30米,则电线杆
的高为( )米.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db20862b954cd1886f4765657a46d91c.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 如图,是水库大坝横断面的部分,坝高
,迎水斜坡
,斜坡的坡角为α,则该大坝的坡度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/391c1cc570b0bdbd1a5b65b5cbdd5509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018e3ce296391f3c71070b068527fae7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024·云南昆明·一模
名校
7 . 如图,某班数学课外活动小组的同学想要测量公园内一小山的高度
,通过测量知道坡角
,斜坡
的长度为
,则小山的高度
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c9667032ec704927b9a3dcd2d73e6ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ddf25f9632679ea9aa274898dfa115.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . 为助力乡村振兴,某村委会决定在辖区的一条河上修建一座步行观光桥.如图,该河旁有一座小山,山高
米,坡面
的坡度
(注:坡度i是指坡面的铅直高度
与水平宽度
的比),点C、A与河对岸点E在同一水平线上,从山顶B处测得河对岸点E的俯角为
.问该河的河宽
为多少米?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aff4e127d5f49db0c376822665bee43c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/387affdd1c47462171a83af9f0af7a1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30542b942e3bcbcff9b9fcf75a2b5366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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2024-05-21更新
|
166次组卷
|
3卷引用:湖南省株洲市醴陵市2023-2024学年九年级下学期期中数学试题
9 . 如图,某数学活动小组为测量学校旗杆
的高度,沿旗杆正前方
米处的点
出发,沿斜面坡度
的斜坡
前进
米到达点
,在点
处安置测角仪,测得旗杆顶部
的仰角为
,量得仪器的高
为
米,已知
、
、
、
、
在同平面内,
,则旗杆
的高度是_______ 米.(参考数据:
,计算结果精确到
米)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df98c7b41e565f2f1f0b36fb98cfe3bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e6f107b79080fa968334b16fec1dd4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/742145c3bfb5281e2e583e6405a3d4ee.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5885aa4ddc3e5f03c708ea3afc84804b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e820c2fae5df321a15a0478a70a4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2466cd4f7db939faf82172df7040b16a.png)
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10 . 某班两个兴趣小组计划合作测量校园内一斜坡(坡度为
)旁路灯的高度,分工如下:
小组甲:测量竹竿
的长度,并将该竹竿竖立在地面上,测量其在地面上的影长
.
小组乙:在同一时刻,测量路灯
在斜坡上的影长
,及路灯与斜坡底端的距离
.测量示意图和测量数据如下:
请你根据以上信息计算路灯
的高度.(结果保留整数,参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db20862b954cd1886f4765657a46d91c.png)
小组甲:测量竹竿
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
小组乙:在同一时刻,测量路灯
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
请你根据以上信息计算路灯
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8a7ff6bb8000946da9599d7d903ac9a.png)
小组 | 甲 | 乙 |
图示 |
|
![]() ![]() ![]() ![]() |
测量数据 | ![]() ![]() | ![]() ![]() |
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