如图,游客从某旅游景区的景点A处下山至C处有两种路径.一种从A沿直线步行到C,另一种是先从A沿索道乘缆车到B,然后从B沿直线步行到C.现有甲、乙两位游客从A处下山,甲沿AC匀速步行,速度为50m/min.在甲出发2min后,乙从A乘缆车到B,再从B匀速步行到C.假设缆车匀速直线运行的速度为100m/min,山路AC长为2520m,经测量,
,∠B为钝角.
(1)求索道AB的长度;
(2)求乙出发多少分钟后,乙在缆车上与甲的距离最短?最短距离为多少m(结果保留根号)?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94772a935fe01657be6d23389891ec3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/30/47584024-844f-4d65-a8b3-51b9bc00698f.png?resizew=85)
(1)求索道AB的长度;
(2)求乙出发多少分钟后,乙在缆车上与甲的距离最短?最短距离为多少m(结果保留根号)?
更新时间:2023-07-30 10:47:26
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解题方法
【推荐1】在
中,角
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,
所对的边分别为
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(1)求证:
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适中
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【推荐2】已知函数
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名校
【推荐1】已知向量
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解题方法
【推荐2】
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