11-12九年级下·江苏南通·期中
名校
1 . 如图所示,某河提的横断面是梯形
,
,迎水坡
长13米,且
边的坡度为
,则河堤的高
为__ 米.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d730ae4307db56b47849c3a19dedfb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb16d1089cf194d658387742e1c2a93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/b0c0234f-3f3d-48a6-95c7-26d30ad35456.png?resizew=229)
您最近一年使用:0次
2022-12-10更新
|
268次组卷
|
7卷引用:2012届江苏省启东市东海中学九年级下学期期中测试数学试卷
2 . 如图,在数学综合实践活动课上,两名同学要测量小河对岸大树
的高度,甲同学在点
测得大树顶端
的仰角为
,乙同学从
点出发沿斜坡
走
米到达斜坡上点
处,在此处测得大树顶端
的仰角为
,且斜坡
的坡度为
,
于点
,点
、
、
在一条直线上.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/3aa08915-280c-4d9d-8550-222860e132a5.png?resizew=203)
(1)求乙同学从点
到点
的过程中,上升的竖直高度
;
(2)依据他们测量的数据求出大树
的高度.(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c423cfa71956862edbed10a5ba12d0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41555aacbfa7c338b1f49f439b320b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344067523ee04f5cc546978ca0116e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/3aa08915-280c-4d9d-8550-222860e132a5.png?resizew=203)
(1)求乙同学从点
![](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/c7e4fa04825ac7d071968056322d88be.png)
(2)依据他们测量的数据求出大树
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16be1888e0a6bb04df4520fd9770fef.png)
您最近一年使用:0次
2022-12-09更新
|
248次组卷
|
7卷引用:2021年山东省济南市莱芜区中考数学三模试卷
2021年山东省济南市莱芜区中考数学三模试卷(已下线)(上海卷)2022年中考数学第一次模拟考试(已下线)第二十五章 锐角的三角比(A卷·知识通关练)-【单元测试】2022-2023学年九年级数学上册分层训练AB卷(沪教版上海)陕西省汉中市镇巴县2021-2022学年九年级上学期期末考试数学试卷2023年山东省济南市中考二模数学试题(已下线)2023年山东省济南市中考二模数学试题变式题21-26题江苏省宿迁市宿迁青华中学2023-2024年九年级上学期第三次月考数学试题
名校
3 . 如图,为了测量某建筑物
的高度,小颖采用了如下的方法:先从与建筑物底端B在同一水平线上的A点出发,沿斜坡
行走100米至坡顶D处,再从D处沿水平方向继续前行若干米到点E处,在E点测得该建筑物顶端C的仰角为59°,建筑物底端B的俯角为
,点A、B、C、D、E在同一平面内,斜坡
的坡度
.根据以上数据,计算出建筑物BC的高度约为(结果精确到1.参考数据:
,
,
)( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/466aa769-eeea-4405-a59a-a5d22c4b38de.png?resizew=272)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a32a2355d81cb016521c1a5d55e9d8b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8cfa8d8ba8eaa8b575f93ecc3ae4190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c8f5175ab8ce8b5a82aec3b071310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25bc929da83fbb854acee01281952aa7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/466aa769-eeea-4405-a59a-a5d22c4b38de.png?resizew=272)
A.158米 | B.161米 | C.159米 | D.160米 |
您最近一年使用:0次
2022-12-06更新
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307次组卷
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6卷引用: 2022年山东省济南东南片区中考一模数学试题
2022年山东省济南东南片区中考一模数学试题(已下线)28.2.2 解直角三角形的应用(分层练习)-2022-2023学年九年级数学下册同步精品课堂(人教版) 重庆市合川中学2022-2023学年九年级数学期末线上学情调研试题(已下线)山东省济南市高新区2022-2023学年九年级上学期期末数学试题变式题6-10(已下线)2023年山东省济南市中考二模数学试题变式题6-10题2023年河北省邢台市任泽区中考模拟数学试题
4 . 小明去爬山,在山脚A看山顶D的仰角
,小明在坡比为
的山坡上走1300米到达B处,此时小明看山顶的仰角
,则山高
为( )米
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/4b1b62a1-3844-4de5-b548-ca5ec76bff02.png?resizew=162)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65639672f444b3d4dc6fc4f357ddbd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6746ae6c126b9798fd47a752d0495c1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeee816c79019218cc3350c8fd9ff18f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/4b1b62a1-3844-4de5-b548-ca5ec76bff02.png?resizew=162)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-12-06更新
|
197次组卷
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5卷引用:2022年山东省济南市槐荫区九年级数学线上测试试题
2022年山东省济南市槐荫区九年级数学线上测试试题(已下线)1.5 三角函数的应用(分层练习)-2022-2023学年九年级数学下册同步精品课堂(北师大版)(已下线)28.2.2 解直角三角形的应用(分层练习)-2022-2023学年九年级数学下册同步精品课堂(人教版)(已下线)2023年山东省济南市中考二模数学试题变式题6-10题2023年山东省日照市金海岸中学中考三模数学试题
5 . 如图,水坝的横截面是梯形
,迎水坡
的坡角
为
,背水坡
的坡度
为
,坝项宽
米,坝高5米.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/6e997f35-6dc1-40db-b2cf-163e8154d3f1.png?resizew=247)
求:
(1)坝底宽
的长(结果保留根号);
(2)在上题中,为了提高堤坝的防洪能力,市防汛指挥部决定加固堤坝,要求坝顶
加宽
米,背水坡
的坡度改为
,求横截面增加的面积(结果保留根号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f98ffa8c83755eaa28e688ad5d95a310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6714bc6120996ad930a0a37053480de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac6b8dea46ef55b9646e4be491d28273.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/6e997f35-6dc1-40db-b2cf-163e8154d3f1.png?resizew=247)
求:
(1)坝底宽
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)在上题中,为了提高堤坝的防洪能力,市防汛指挥部决定加固堤坝,要求坝顶
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec818fc0754296163206e1e8870f9e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82c17cf4caf4b6cf25249f39e92e07d1.png)
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6 . 一条上山直道的坡度为
,沿这条直道上山,则前进100米所上升的高度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34433efe4d813ee21436c46b1d87c27.png)
A.700米 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
21-22八年级下·全国·课后作业
7 . 如图,大坝横截面的迎水坡
的坡比为
,背水坡
的坡比为
,大坝高
,坝顶宽
.求大坝横截面的面积和周长(周长精确到
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c998e373fbb7567a50092f6b244ae61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1acf73afe897ced8cdb80e609d8be230.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcac6547ac05ed3dc85e1032c5b58a61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8542a0af4ea891ce6a622afb8193dc00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/635bc90ea3c6d48d924fb5607ef0f68b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/fcc038e2-9235-484a-897e-e234d7014c65.png?resizew=189)
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21-22八年级下·全国·课后作业
8 . 如图,扶梯
的坡比为
:
,滑梯
的坡比为
:
,
,
.一男孩从扶梯走到滑梯的顶部,然后从滑梯滑下,经过的总路程是多少米(要求先化简,再取近似值.结果精确到
)?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66577f4cb97c0d2a213ab1a9a02d1324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f0ef824845a450279d4af3b998b95c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4befaf77e058cb8fc8121a2864b59ae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead0a17a2727a06df736d160f085a0b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10711c6e003787366b8c730d57f18f89.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/9b28e15c-a06a-4d61-a218-95c81bcbb12b.png?resizew=276)
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名校
9 . 如图,考古队在
处测得古塔
顶端
的仰角为
,斜坡
的长为
米,坡度
,
长为
米,则古塔
的高度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2450156c6f081864f1efcf10af156e47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-11-25更新
|
258次组卷
|
6卷引用:山东省菏泽市曹县2022-2023学年九年级上学期期中数学试题
山东省菏泽市曹县2022-2023学年九年级上学期期中数学试题(已下线)28.2.2 解直角三角形的应用(分层练习)-2022-2023学年九年级数学下册同步精品课堂(人教版)(已下线)期末押题培优01卷(考试范围:九上全册+九下解直角三角形)-【微专题】2022-2023学年九年级数学下册常考点微专题提分精练(浙教版)河北省沧州市孟村回族自治县2023-2024学年九年级上学期期末数学试题吉林省长春市二道区第一〇八学校2023-2024学年九年级下学期4月月考数学试题广东省深圳市外国语学校2023-2024学年九年级第六次月考数学试题
名校
10 . 如图所示,一水库迎水坡
的坡度
,则求坡角
的正弦值![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09824eebae0979a2b6b1fcc4d04bdee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
您最近一年使用:0次
2022-11-16更新
|
147次组卷
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2卷引用:江苏省苏州市振华中学校2022-2023学年九年级上学期期中数学试题