夜晚,在侨中
栋5楼观赏完美大厦的霓虹灯是一件很惬意的事.完美大厦主楼目前是我市中心城区最高的地标性建筑.某学习小组要完成两个实习作业:验证百度地图测距的正确性及测算完美大厦主楼的高度,如图(1),博爱路沿线的水平路面上有两点
,
,其中
指向正西方向.首先利用百度地图测距功能测出
长度为
,接着在南外环沿线选定水平路面上可直接测距的
,
两点,测得
,
,
,
,学习小组根据上述条件计算出
长度,并将其与
的实际长度
进行比较,若误差介于
米~20米之间,则认为百度地图测距是准确的.
![](https://img.xkw.com/dksih/QBM/2021/7/26/2772135803617280/2776281835683840/STEM/bc02d623-467c-4205-802f-b854c370349f.png?resizew=483)
(1)通过计算说明百度地图测距是否准确?(
)
(2)如图(2),小组在
处测得完美大厦主楼楼顶
在西偏北
方向上,在
处测得楼顶
在西偏北
方向上,且仰角
;通过计算得
,
,
,若百度地图测出的
是准确的,请根据以上数据测算完美大厦主楼的高度(精确到1米).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26016c9a610be4da74086a37c3327d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/474f34c6dc5621acad72270d2a49255d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2bdcd23d2c26d9df0b4756d8a715673.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20fe532cad7a1f9279d58874aa4def00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9228b213dc6b256b752b38a466ebec93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d819daa9e169471fc02581047e36502d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ef63ad7b61f3fae0ac81148e7700ff.png)
![](https://img.xkw.com/dksih/QBM/2021/7/26/2772135803617280/2776281835683840/STEM/bc02d623-467c-4205-802f-b854c370349f.png?resizew=483)
(1)通过计算说明百度地图测距是否准确?(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52881be613aa404e553da30d8987cfad.png)
(2)如图(2),小组在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/952fe36814f6af5d333ffd08051d832d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b991576e4ed0a98cdccfe93253f74d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d403384679e6f362c3b906fff0e398f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/146008006421a1ab514dc729275800cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1dac31fb8c5cd0436e12fde15a9f2c.png)
更新时间:2021-07-31 21:02:45
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【推荐2】甲船在
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【推荐2】如图,某中学在实施“五项管理”中,将学校的“五项管理”做成宣传牌(CD),放置在教学楼的顶部(如图所示),该中学研究性学习小组在山坡的坡脚A处测得宣传牌底部D的仰角为60°,沿该中学围墙边坡AB向上走到B处测得宣传牌顶部C的仰角为45°.已知
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e31f90899d0d8f78c020dbc46b22d303.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/658ed95b-0ad2-4a1d-8ba7-5e8f43a5d733.png?resizew=188)
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