如图,小刚同学从楼顶A处看楼下公园的湖边D处的俯角为
,看另一边B处的俯角为
,楼高
为25米.(结果精确到1米,参考数据:
,
,
,
).
(1)填空:
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)求楼下公园的湖宽
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/225803a7818b0985a1b96d8e0a627251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31a14bd2a972f43d7a26a99589ad083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787e80751174cfc51dc8b24b1652a684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af713c92134fbbb59ffb7a04f300b8dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27fae0db3d432ee5a46d93ca7e9eff6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9035c611c44f9dbb22a3993f4d30e533.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/4f02f9fa-5a07-4a50-804c-0bd31770934d.png?resizew=215)
(1)填空:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db90c0feb35aa54464f1303be9118f37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db07c6ce6c8b0e96a3470c6a3491334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)求楼下公园的湖宽
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
更新时间:2024-03-13 17:30:14
|
【知识点】 仰角俯角问题(解直角三角形的应用)
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解答题-问答题
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较易
(0.85)
【推荐1】如图,为了测量某市解放纪念碑的高度
,在与纪念碑底部B相距27米的C处,用高1.5米的测角仪
测得纪念碑顶端A的仰角为
,求纪念碑的高度.(结果精确到0.1米.)
【参考数据:
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【参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9473197dd7f60f27540527258e1989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012877501d3e5171ac75fa1110cb1e1e.png)
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您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】蚌埠位于安徽省东北部,淮河中游,地处秦岭淮河一线,大约在北纬
位置.蚌埠市南北分界线雕塑(如图1)由中国当代艺术大师韩美林先生创作,名为《火凤凰·龙》.在某数学活动课上,老师带领学生前往该处测量雕塑的高度.如图2,在
处用高
米(即图中线段
的长)的测角仪测得雕塑顶点
的仰角为
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米后到达
处,在
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的仰角为
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(结果精确到
米,参考数据:
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.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/9/64cbb02e-c6ce-4660-abb6-5c5f528d35e5.png?resizew=128)
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