如图,某数学兴趣小组想测量一棵树
的高度,他们先在点
处观察树顶
,测得视线与水平线的夹角为
(即
),然后沿
方向前行
,到达
处,在
处观察树顶
,测得视线与水平线的夹角为
(即
,
,
,
三点在同一直线上).请你根据他们的测量数据计算这棵树
的高度.(结果精确到
.参考数据:
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65639672f444b3d4dc6fc4f357ddbd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167e6e41ac221847824a72e964f340f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1212f222bed8b39156d13de8a35f40f.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfaa19eeaf415ed419e77fe92794f443.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/2024/3/15/fda428b8-925d-4c42-93e5-9036115e2db1.png?resizew=227)
更新时间:2024-03-16 09:19:21
|
【知识点】 仰角俯角问题(解直角三角形的应用)
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【推荐2】合肥新桥国际机场出港大厅有一幅“黄山胜景”的壁画.聪聪站在距壁画水平距离15米的地面,自A点看壁画上部D的仰角为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
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【推荐3】某校数学活动小组的同学要借助无人机测量某山坡上信号塔顶端
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
活动内容 | 测量信号塔顶端到地面的距离 | |
活动目的 | 运用锐角三角函数知识解决实际问题 | |
测量工具 | 无人机、测量角度的仪器、皮尺等 | |
测量示意图 | 说明:如图为信号塔和建筑物的侧面示意图,点![]() ![]() ![]() | |
测量数据 | ①从点![]() ![]() ![]() | |
②从点![]() ![]() ![]() | ||
③从点![]() ![]() ![]() | ||
④建筑物的宽度![]() | ||
⑤建筑物的高度![]() | ||
参考数据 | ![]() ![]() ![]() ![]() | |
计算信号塔顶端到地面的距离 | 要求:①结果保留到![]() ②先选择合适的测量数据,再进行计算. |
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