我市的花果山景区大圣湖畔屹立着一座古塔——阿育王塔,是苏北地区现存最高和最古老的宝塔.小明与小亮要测量阿育王塔的高度,如图所示,小明在点
处测得阿育王塔最高点
的仰角
,再沿正对阿育王塔方向前进至
处测得最高点
的仰角
,
;小亮在点
处竖立标杆
,小亮的所在位置点
、标杆顶
、最高点
在一条直线上,
,
.(注:结果精确到
,参考数据:
,
,
)
;
(2)求小亮与阿育王塔之间的距离
.
![](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/37ea43b6b329aec399be198a63287a6a.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/a5f3ab8705bbb5017677e14dc9414f9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25986df978766e4984d7d6a7f9660e35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0753d67271c14e37a0957b7d683d2cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/322db20a0fa0f635f0d9add72f1c84f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/635bc90ea3c6d48d924fb5607ef0f68b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e9d813d9249c42f1f05d88f57f54f0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c57d607a22a7db7915f90a8575bcc503.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778ae2586803a3cdb5d52a5e39a6bdcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
(2)求小亮与阿育王塔之间的距离
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
2022·江苏连云港·中考真题 查看更多[8]
2022年江苏省连云港市中考数学真题(已下线)专题16 解直角三角形-2022年中考数学真题分项汇编(全国通用)(第1期)(已下线)2022年江苏省连云港市中考数学变式题22-27(已下线)专题21 图形的相似-三年(2020-2022)中考数学真题分项汇编(江苏专用)(已下线)专题26 解直角三角形的实际应用三年中考真题-【微专题】2022-2023学年九年级数学下册常考点微专题提分精练(苏科版) 河北省石家庄地区2022-2023学年九年级上学期期中考试数学试题(已下线)专题25 锐角三角函数的实际应用-2023年中考数学二轮复习核心考点专题提优拓展训练(已下线)查补重难点08 解直角三角形及其应用-【查漏补缺】2024年中考数学复习冲刺过关(江苏专用)
更新时间:2022-06-17 11:15:25
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【推荐1】如图,广场上有一盏高为
的路灯
,把灯O看作一个点光源,身高
的女孩站在离路灯
的点B处.图2为示意图,其中
于点A,
于点B,点O,C,D在一条直线上,已知
.
的长.
(2)若女孩以
为半径绕着路灯顺时针走一圈(回到起点),求人影扫过的图形的面积.(
取3.14)
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(2)若女孩以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585c0b361a3e508f3dbb27a40b2dad5e.png)
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【推荐2】大雁塔是现存最早、规模最大的唐代四方楼阁式砖塔,堪称中国唐朝佛教建筑艺术杰作,也是西安市著名的旅游景点.如图,小华拿着一部长为
的手机(图中
)站在广场上离大雁塔
的点
处(即
),他把手机竖直并将手臂向前伸(即
),手机上下两端恰好挡住他观察大雁塔的视线(即点
、
、
在一条直线上,点
、
、
在一条直线上),已知点
到手机
的距离为
,
,
,图中所有的点都在同一平面内,求大雁塔的高度
.(精确到
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d19daa2b38e3a52bd7096d235c843110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa83176cc4c308f8e28a6d141a96e576.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16aad38b43462ca7a8fb9bc9484ad3a0.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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【推荐1】如图,某无人机兴趣小组在操场上展开活动,此时无人机在离地面30米的D处,无人机测得操控者A的俯角为
,测得教学楼
顶端点C处的俯角为
,又经过人工测量测得操控者A和教学楼
之间的距离为57米.(点A,B,C,D都在同一平面上,结果保留根号)
(1)填空:
______度,
______度;
(2)求此时无人机与教学楼
之间的水平距离
的距离;
(3)求教学楼
的高度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/14/d5bdee70-6829-41d5-bf51-a5410ae20dbf.png?resizew=241)
(1)填空:
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/967a1c427bfb4d6aa27c331c84d88ef1.png)
(2)求此时无人机与教学楼
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(3)求教学楼
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【推荐2】某校数学课外活动小组在学习了锐角三角函数后,组织了一次利用自制的测角仪测量古塔高度的活动.具体方法如下:在古塔前的平地上选择一点E,某同学站在E点用测角仪测得古塔顶的仰角为30°,从E向着古塔前进12米后到达点F,又测得古塔顶的仰角为45°,并绘制了如图的示意图(图中线段AE=BF=1.6米,表示测角的学生眼睛到地面的高度).请你帮着计算古塔CD的高度(结果保留整数,参考数据:
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【推荐3】风能是一种清洁无公害的可再生能源,利用风力发电非常环保.如图
所示,是一种风力发电装置;如图
为简化图,塔座
建在山坡
上(坡比
,
垂直于水平地面
,
,
,
三点共线),坡面
长
,三个相同长度的风轮叶片
,
,
可绕点
转动,每两个叶片之间的夹角为
﹔当叶片静止,
与
重合时,在坡底
处向前走
米至点
处,测得点
处的仰角为
,又向前走
米至点
处,测得点
处的仰角为
(点
,
,
,
在同一水平线上).
的长;
(2)在图
状态下,当叶片绕点
顺时针转动
时(如图
),求叶片
顶端
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,
,
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(2)在图
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