如图,
都在同一个与水平面垂直的平面内,
为两岛上的两座灯塔的塔顶,测量船于水面
处测得
点和
点的仰角分别为
,
,于水面
处测得
点和
点的仰角均为
,
试探究图中
间距离与另外哪两点间距离相等,然后求
的距离(计算结果用根号表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/085f1c56b0b8feedc729a5bb42f24707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc2b364f8c525d18ba60f8ba07987d2e.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a4c9b697e3df2b5469b71d3b5e47a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9adc4759b788aa0ec979ea043e6a5dce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc2b364f8c525d18ba60f8ba07987d2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc2b364f8c525d18ba60f8ba07987d2e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/6fcdd05d-cf6a-467c-8ab4-80e5759a19b1.png?resizew=217)
9-10高一下·海南·期末 查看更多[2]
更新时间:2019-06-16 11:04:01
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相似题推荐
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐1】如图,测量河对岸的塔高
时,可以选取与塔底B在同一水平面内的两个测量基点C与D.现测得
,
,
米.在点C测得塔顶A的仰角为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/11/80d8f4cf-2730-4242-8766-8421fb669be9.png?resizew=205)
(1)求B与D两点间的距离;
(2)求塔高
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f86b0e3bdf0a839629ad01138fc31f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d63c381c7fab8b352e3e55cfca0bd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a50f4e873779212653bffcc970862402.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/11/80d8f4cf-2730-4242-8766-8421fb669be9.png?resizew=205)
(1)求B与D两点间的距离;
(2)求塔高
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
解答题-应用题
|
适中
(0.65)
名校
【推荐2】如图,有两条相交成
的公路
,
,其交点为
,甲、乙两辆汽车分别在
,
上行驶,起初甲在离
点
的A处,乙在离
点
的
处,后来两车均用
的速度,甲沿
方向,乙沿
方向行驶.
(2)
小时后两车的距离是多少?
(3)何时两车的距离最短?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f51ea72e56e0bc3c68621dac8e2d9077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26a0328ca156e67a0c8583929c28771b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f51ea72e56e0bc3c68621dac8e2d9077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26a0328ca156e67a0c8583929c28771b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3fb33e7fb8709bd8d5db686644d50b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f971d44effe601c7244f7bcde43b863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42f145950862ad3f5f3b1d809af1bb9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4defb9363b4f33b52375d075450c6c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb06ac70dca8c91dab93f55cc9e01b48.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)何时两车的距离最短?
您最近一年使用:0次