1 . 如图,重庆市实验中学校为了丰富同学们的课外实践活动,组织科技爱好者在斜坡A地进行无人机试飞.张明的无人机放飞到距离地面
米的P点,测得斜坡A地的俯角为15°,斜坡B地的俯角为60°,斜坡
的斜面坡度为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/34dc7517-d65a-4c5e-918e-ea5bf3b8ecba.png?resizew=222)
(1)求斜坡A地到B地的距离;
(2)下课前,老师要求同学们在A地集合,张明对无人机P发出回收指令以后,然后他迅速从山脚的C地跑回到A地,已知斜坡AC与水平地面夹角为53°,张明上坡的跑步速度为6m/s,无人机的速度为20m/s,在张明跑到A地时,无人机是否已经回到A地?请说明理由.(
,
,
,
,
,结果精确到0.1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6010598e7bbdd27219819ac92c74c2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db20862b954cd1886f4765657a46d91c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/34dc7517-d65a-4c5e-918e-ea5bf3b8ecba.png?resizew=222)
(1)求斜坡A地到B地的距离;
(2)下课前,老师要求同学们在A地集合,张明对无人机P发出回收指令以后,然后他迅速从山脚的C地跑回到A地,已知斜坡AC与水平地面夹角为53°,张明上坡的跑步速度为6m/s,无人机的速度为20m/s,在张明跑到A地时,无人机是否已经回到A地?请说明理由.(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52881be613aa404e553da30d8987cfad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47bb3f35e3db7c1f3a3dd3eb20151b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/888e6e9e6ca20554cc98547b1a3f8bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04390bfdcc0c4707fd43a2c0b6a585f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ab9ef8b634c2a582a9b1fb20fdd3a0c.png)
您最近一年使用:0次
2024-04-01更新
|
200次组卷
|
2卷引用:重庆市巴南区龙洲湾中学、巴南区实验中学、全善学校2023-2024学年九年级下学期3月月考数学试题
2 . 除夕夜小李和亮亮相约去看烟花,并测量烟花的燃放高度.如图,小李从点B处出发,沿坡度为
的山坡
走了
到达坡顶点A处,亮亮则到达离点A水平距离为
的点C处观看,此时烟花在与B,C同一水平线上的点D处点燃,一朵朵灿烂的烟花在点D的正上方点E处绽放,小李在坡顶A处看烟花绽放处E的仰角为
,亮亮在C处测得点E的仰角为
.(点A,B,C,D,E在同一平面内;参考数据:
,
)
(2)烟花燃放结束后,小李和亮亮来到烟花燃放地帮忙清理现场的垃圾,他们清理时发现说明书上写着烟花的燃放高度为
,请你帮他们计算一下,说明书上写的烟花燃放高度与实际燃放高度(图中
)是否相符?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4dd80daefa23a61d300a829f77bbfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2e02621fbb924cfece5d16038f558f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49ec72d07385ed62ec9540083958be2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52881be613aa404e553da30d8987cfad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47bb3f35e3db7c1f3a3dd3eb20151b5f.png)
(2)烟花燃放结束后,小李和亮亮来到烟花燃放地帮忙清理现场的垃圾,他们清理时发现说明书上写着烟花的燃放高度为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/763579e0339bcd9bcd374807fd34a098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
您最近一年使用:0次
2024-03-31更新
|
246次组卷
|
2卷引用:2024年重庆中考数学模拟试题(二)
3 . 某商业区为了提升地下停车库入口的安全性能,拟将坡比为
的斜坡
改造成斜坡
,使得
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/31/5ce11ccf-4426-4884-a481-f92ce6fe2bf4.png?resizew=142)
(1)若
,求斜坡底部增加的长度
为多少米?(结果确到0.1米)
(2)入口处水平线
,且
,地下停车库坡道入口上方点E处有悬挂广告牌
,
,
.若一辆满载货物高为
的货车沿斜坡
驶入车库,行进中是否会碰到广告牌的下端F?请说明理由.(参考数据:
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e76213e9474cc6f549a94344fd25f27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a9665292709e24361204163c64fd15.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/31/5ce11ccf-4426-4884-a481-f92ce6fe2bf4.png?resizew=142)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2234704a19451635fea5e72c78f81d00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
(2)入口处水平线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77f6e60f4598a81f2a26ff28b1bff66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/626270ae36efe23a40736897cc10645b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f59d528bf5ee8f3e1d93645bb2c48b7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4161ff9e22661ae123f4b6defe389131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f262271bb023018c6f14833f955e157.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ec99c956b417f7b4f82c65c31d4183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1022757dc1d4ae8d4d19c5ccb43f1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/391bb649bf021d732dfe642b3c5c8c5a.png)
您最近一年使用:0次
2024-03-29更新
|
118次组卷
|
3卷引用:重庆市高新区2023-2024学年九年级下学期第一次月考数学试题
4 . “养生黑山谷,梦幻奥陶纪”,闻名遐迩的奥陶纪悬崖大秋千惊险刺激,颇受年轻人追捧.下图是其简化截面图,线段
是其主支柱,垂直于地面
.游客体验该项目时,机械装置将21米的摆臂
拉至主支柱左侧,将其释放,摆动到主支柱右侧FH处,摆动过程中,摆臂保持笔直.平台
下悬崖高度(点M与悬崖底部水平面距离)约为280米.
某日小明去体验此项目,他先从A出发沿坡度
的斜坡
向上2.5米到平台
上的B点,然后水平向右2米到达点C的位置,此时看向支柱顶点F的仰角为
,已知
米,小明眼睛与平台的距离
米,(参考数据:
,
,
,
,
)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/22/e5ed89a2-2946-4848-9f84-db612357c51d.png?resizew=287)
(1)请计算主支柱
的高度(结果保留整数).
(2)由于高空项目风险大,为保障安全,国家制定了相关规定,高空秋千项目属于大型游乐设备,最大单侧摆角(摆臂与主支柱夹角)不超过75度,同时,运营方将秋千坐人端在运行路线上的平均速度定为不超过20米/秒时为安全可控,体验该项目时,若小明从与支柱夹角为
的
位置运行到在支柱另一侧夹角为
的
位置所用时间为3秒,请判断小明的平均速度是否安全可控且说明理由,并计算出此时H点与悬崖底部水平面的垂直高度(结果保留整数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ac28c7adade476df476c2bf90a8416.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e4c6b0869d7248b6c2f964718a67702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
某日小明去体验此项目,他先从A出发沿坡度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c43e3b52734884adbf317d41e005c6e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16aa0b9869db50a9ab48cc32925d8e96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e089bfa1e46b2446cb6dac6882febe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2299a444dcfb9133f6a82a028b1c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d988a20eddaaa07b17f15b652e16391.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c40de1af73c4fdbd42edf38d0f143b80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2433da66580064b5367339e715c898e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a205a05ab52c221246b224c104d3764.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f13a78a5feb056770750c6a0ebebdd2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/22/e5ed89a2-2946-4848-9f84-db612357c51d.png?resizew=287)
(1)请计算主支柱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ac28c7adade476df476c2bf90a8416.png)
(2)由于高空项目风险大,为保障安全,国家制定了相关规定,高空秋千项目属于大型游乐设备,最大单侧摆角(摆臂与主支柱夹角)不超过75度,同时,运营方将秋千坐人端在运行路线上的平均速度定为不超过20米/秒时为安全可控,体验该项目时,若小明从与支柱夹角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a4c9b697e3df2b5469b71d3b5e47a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a4c9b697e3df2b5469b71d3b5e47a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
您最近一年使用:0次
5 . 综合与实践活动中,要利用测角仪测量塔的高度,如图,塔
前有一座高为
的观景台,已知
,
的坡度为
,点E,C,A在同一条水平直线上.某学习小组在观景台C处测得塔顶部B的仰角为
,在观景台D处测得塔顶部B的仰角为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/17948576-284e-4f20-9edb-94fc99cd88ec.png?resizew=252)
(1)求
的长;
(2)求塔
的高度.(结果保留个位)
(参考数据:
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4866e219791f0c6d9f6fb31b4bd97f69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df98c7b41e565f2f1f0b36fb98cfe3bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6660718078b93a4b14fde0a83970758c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/17948576-284e-4f20-9edb-94fc99cd88ec.png?resizew=252)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(2)求塔
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f908d4b655c081176a5a78c4372f9be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9f4ca4ac8a19cde8a76f21d24f3dbcb.png)
您最近一年使用:0次
2024-01-21更新
|
257次组卷
|
4卷引用:重庆市南岸区2023-2024学年九年级上学期期末数学试题
名校
6 . 我市为满足广大市民的锻炼需求,拟将郊区的一座山打造为健身公园,山体的横截面示意图如图1,计划修建两段登山步道
、
和两段平台
、
.其中,平台
、
均与水平地面
平行,平台
长75米,在点
处观察点
的仰角为
(即
),步道
的坡角为
,平台
距离地面
的竖直高度为900米,步道
的坡度
.(参考数据:
,
,
,
)
的长度;
(2)为方便市民徒步登山,市规划局预备将步道
全部修建成石梯,石梯的修建方式及尺寸(包括踏步高和踏步宽)均如图2所示.每一步石梯的安全标准是踏步高不小于
,不大于
,且踏步宽不小于
,不大于
.若计划修建3600个相同尺寸的连续石梯,请你通过计算说明这样修建的石梯是否符合安全标准?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9d74d47d93f5540e801834aa71b3bc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/903c1bb6f9fe8f9b9710683a3e601452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943b52e2889748a94dfe333dfa5ae576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76fe9cc87f8e8389c94efa7e7caab2a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad548d3bb499aab6d0baf4032be99bfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7664a5f9b61fd010eda340986ca34b47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c894b7d6baa55c80c64e74748dad898.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)为方便市民徒步登山,市规划局预备将步道
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b03da3aee588e05b99c674302d069b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d82d4b2ae7dbf34a7cdd48ab3a0830d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bcfbe9b99ff67027ed57798aea7c39c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96f8ca823d812499d597d0ac72164dc.png)
您最近一年使用:0次
2024-01-20更新
|
700次组卷
|
3卷引用:重庆市沙坪坝区南开中学校2023-2024学年九年级上学期期末数学试题
重庆市沙坪坝区南开中学校2023-2024学年九年级上学期期末数学试题2024年重庆中考数学仿真押题模拟预测题(一)(已下线)九年级数学开学摸底考(北师大版九上+九下第一章,辽宁专用)-2023-2024学年初中下学期开学摸底考试卷
名校
7 . 为了方便市民出行,建委决定对某街道一条斜坡进行改造,计划将原斜坡坡角为
的
改造为坡角为
的
,已知
米,点
,
,
,
,
,
在同一平面内.
的距离;(结果保留根号)
(2)一辆货车沿斜坡从
处行驶到
处,货车的高
为
米,
,若
米,求此时货车顶端
到水平线
的距离
.(精确到
米,参考数据:
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b342d5cb6dd1c84a82f6aca68ed829c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c030b25575d683af91c06e6a3e4f463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31002898d491f5a970394ee1356c3dea.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)一辆货车沿斜坡从
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8de4a54cc7818be87a239f6de5f5d05b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040dbb21acfecb924ba08d1469dc5e98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2466cd4f7db939faf82172df7040b16a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c894b7d6baa55c80c64e74748dad898.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/460317e7c26f95b9b29cfe1a89b796d6.png)
您最近一年使用:0次
2023-12-11更新
|
517次组卷
|
4卷引用:九年级数学开学摸底考(重庆专用,中考范围)-2023-2024学年初中下学期开学摸底考试卷
(已下线)九年级数学开学摸底考(重庆专用,中考范围)-2023-2024学年初中下学期开学摸底考试卷(已下线)中考重点04 三角函数实际问题(4题型+满分技巧+限时检测)-2024年中考数学【热点·重点·难点】专练(重庆专用)重庆市第一中学校2023-2024学年九年级上学期期中数学试题湖南省衡阳市衡山县 2023-2024学年九年级上学期期末数学试题
名校
8 . 如图,在河流两边有甲、乙两座山,现在从甲山
处的位置向乙山
处拉电线.已知甲山上
点到
的垂直高度
米;乙山
的坡比为
,乙山上
点到河边
的距离
米,从
处看
处的俯角为
.(
在同一平面内,参考值:
)
处到河边
的垂直距离;
(2)求河
的宽度(结果保留整数).
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e17e1f678a2fd5d70322839926060d04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff51cfdf99a6f1000b0878a6588f5dc.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/0e0abb958bf734dedeea36af43ac1197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31a14bd2a972f43d7a26a99589ad083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4496fe22b40bc63581998e6b7ef6783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eeebf48e6e0f899c3a5fd71018451db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)求河
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
2023-12-10更新
|
375次组卷
|
4卷引用:中考重点04 三角函数实际问题(4题型+满分技巧+限时检测)-2024年中考数学【热点·重点·难点】专练(重庆专用)
(已下线)中考重点04 三角函数实际问题(4题型+满分技巧+限时检测)-2024年中考数学【热点·重点·难点】专练(重庆专用)重庆市沙坪坝区第七中学校2023-2024学年九年级上学期期中数学试题(已下线)清单19 锐角三角函数(3个考点梳理+17种题型解读+提升训练)-2023-2024学年九年级数学上学期期末考点大串讲(苏科版)山东省德州市乐陵市化楼镇中学2023-2024学年九年级上学期12月月考数学试题
名校
9 . 周末,小明和小红相约爬山到山顶点
处观景(山脚处的点
在同一水平线上),小明在
点处测得山顶点
的仰角为37°,他从点
出发,沿
爬山到达山顶
.小红从点
出发,先爬长为
米的山坡
到达点
的坡度为
,然后沿水平观景步道
走了
米到达点
,此时山顶
正好在点
距离
米且仰角
处,最后爬山坡
到达山顶
(点
在同一平面内,小明、小红的身高忽略不计),(参考数据:
,
,
)
到
的距离;
(2)若小明和小红分别从点
、点
同时出发,小明的爬山速度为
米/分,小红的爬山速度为
米/分(小红在山坡
、山坡
段的速度相同),小红的平路速度为
米/分,请问谁先到达山顶
处?请通过计算说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1051ef731f266dbf72ccb19dc222bf2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f534536cc2ccc32cc535e6a5561f99a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cf5a06ab406b97319950bcb16d176c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce9a4b7a53d6d71d15a13c1035331803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d75719d4744f1cf917db0e8d41cb00a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/def7f5a19d0608e6bb2ddaaea5a0c965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbdc5f20049989f9f0197f21174621e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f986badfc5dea707c164e2ab6c98dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb8485466d2127bd681a322f87c58f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67802092c4c9f3b1cff1f9502b7d1ded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若小明和小红分别从点
![](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/0e6f1af4b44b2e97e8f319bab4ae9010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf4066a75edc8587024d3d2f21274220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a17161b28b6ad8f57abc5b11e1b6c671.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
名校
10 . 周末,小明和小红相约爬山到山顶点C处观景(山脚处的点A、B在同一水平线上).小明在A点处测得山顶点C的仰角为
,他从点A出发,沿
爬山到达山顶C.小红从点B出发,先爬长为
米的山坡
到达点D,
的坡度为
,然后沿水平观景步道
走了900米到达点E,此时山顶C正好在点E的东北方向1800米处,最后爬山坡
到达山顶C(点A、B、C、D、E在同一平面内,小明、小红的身高忽略不计).(参考数据:
,
)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/30/8aa166e1-9a96-47c1-acd7-5bb6a0205c8e.png?resizew=302)
(1)求山顶C到
的距离(结果保留整数);
(2)若小明和小红分别从点A、点B同时出发,小明的爬山速度为70米/分,小红的爬山速度为60米/分(小红在山坡
、山坡
段的速度相同),小红的平路速度为90米/分,请问谁先到达山顶C处?请通过计算说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4be049567beb88efc7fdd1086150adc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7deb0e1ce39cf1d5a9ac1e0adb07e6fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52881be613aa404e553da30d8987cfad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47bb3f35e3db7c1f3a3dd3eb20151b5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/30/8aa166e1-9a96-47c1-acd7-5bb6a0205c8e.png?resizew=302)
(1)求山顶C到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若小明和小红分别从点A、点B同时出发,小明的爬山速度为70米/分,小红的爬山速度为60米/分(小红在山坡
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
您最近一年使用:0次