如图,为了测量两山顶
,
之间的距离,飞机沿水平方向
,
两点进行测量,已知
,
,
,
在同一个铅锤平面内(如图所示).已知在点
处测得山项
,
的俯角分别为75°,30°,点
处测得山顶
,
的俯角为45°,60°.已知
.求两山顶点
,
之间的距离
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2663db2bb225151c06943cfd853f488.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/129dd873-831a-4d90-ad39-8c9a16009b39.png?resizew=234)
更新时间:2021-07-21 17:37:44
|
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解答题-问答题
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适中
(0.65)
名校
【推荐1】如图,一人在
地看到建筑物
在正北方向,另一建筑物
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a4c9b697e3df2b5469b71d3b5e47a2.png)
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您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐2】同学们刚刚结束了史上最长寒假,经高二各班数学老师了解,同学们每天沉迷于学习中不能自拔,每天认真完成作业,作业正确率很高,为同学们点赞!某个周日一位同学正在三河滩锻炼身体,突然接到级部通知回家开网络学生会,从三河滩某处A到对岸公路BC的距离AB为2km, B处与家C间的距离为4km,从A到C,必须先步行到BC上的某一点D,步行速度为5km/h,再乘电动车到C,电动车车速为10km/h,记![](https://staticzujuan.xkw.com/quesimg/Upload/formula/214b7ed59de31168adaab83ad917c093.png)
(1)试将由A到C所用的时间t表示为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/214b7ed59de31168adaab83ad917c093.png)
(1)试将由A到C所用的时间t表示为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3becdb68af0712eac0f718b08b1184.png)
(2)间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次