公路北侧有一幢楼,高为60米,公路与楼脚底面在同一平面上.某人在点A处测得楼顶的仰角为
,他在公路上自西向东行走,行走60米到点B处,测得仰角为
,沿该方向再行走60米到点C处,测得仰角为
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4b363797455e171e5dff9193eb28cc9.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4b363797455e171e5dff9193eb28cc9.png)
更新时间:2023-08-05 08:01:12
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