弧の長さと弦の長さがわかっているら、アーチの高さはどうやって求めるのか?
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大神には具体的な手順を教えていただきたいです。Excelのフォーマットがあればさらに良いです!!!弧度法では C = arcsin(L/2r)×2r ......................
角度法では C = arcsin(L/2r)×πr/90 ..............
半径を求めれば、その後は自由になる
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