小丽设计了一种测量树高的方法:她将一根细线的一端固定在半圆形量角器的圆心
处,在细线的另一端
处系一个小重物,制成了一个简单的测角仪(如图
;将此测角仪放在眼前,使视线沿着仪器的直径刚好到达树的最高点(如图2,图
;小丽眼睛(即点
离地1.5米,现测得
,小丽与树的水平距离是5米,则树高是____ 米.(结果保留一位小数,参考数据:
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c25ef3d632398a931a390b501051757.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.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/cdcf8a317ccc87a1bf8e17852fddbe29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2324a65e345753fdd1db2354bfb0ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0d70af9b2290090df70c33b6487bca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ec329dd6bb3995edec573485b04611.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7864a6305afcb39d3a47542e1f3ad094.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eec6678f15b160728fa117cce893c58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c25ef3d632398a931a390b501051757.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/6/dd738f7b-ce64-40aa-bc7e-f3ed12d49a31.png?resizew=367)
更新时间:2024-04-08 12:52:27
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