《周髀算经》是我国最古老的天文学与数学著作,书中讨论了测量“日高”(太阳高度)的方法.大意为:“在
两处立表(古代测望用的杆子,即“髀”),设表高均为
,测得表距为
,两表日影长度差为
,则可测算出日高”由所学知识知,日高![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a69f8514e1b2a4dd56c65304a86411.png)
__________ .(用
表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c4cdda64986729487c2386883d27e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a69f8514e1b2a4dd56c65304a86411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b25c6f7d5dacd8456d4100ca6ff40be.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/bcbdf250-6b37-4be5-b75a-0f27e9353446.png?resizew=172)
20-21高三上·安徽亳州·期末 查看更多[3]
更新时间:2020-02-07 14:28:59
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【推荐1】如图,从地面上C,D两点望山顶A,测得它们的仰角分别为
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【推荐2】山顶上有一座信号发射塔,塔高0.2千米,山脚下有
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