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1 . 国庆阅兵式上举行升国旗仪式,在坡度为
的观礼台上,某一列座位与旗杆在同一个垂直于地面的平面上,某同学在该列的第一排和最后一排测得旗杆顶端的仰角分别为
和
,第一排和最后一排的距离为24.5米,则旗杆的高度约为
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dad09268b7cb8bfcbea010cb6d2a29e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/d82c114f-2dc0-4e3b-a655-68d404a876c0.png?resizew=256)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c12e76fbd84eeec721386bd3b04cc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52881be613aa404e553da30d8987cfad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47bb3f35e3db7c1f3a3dd3eb20151b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dad09268b7cb8bfcbea010cb6d2a29e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/d82c114f-2dc0-4e3b-a655-68d404a876c0.png?resizew=256)
A.17米 | B.22米 | C.30米 | D.35米 |
您最近一年使用:0次
A.17米 | B.22米 | C.30米 | D.35米 |