Re: [其他] 工作上的問題
※ 引述《coolboyplay (星空下)》之銘言：
: 小弟最近工作上遇到此問題
: 一直無法用數學的方式
: 將此段距離求出
: 懇請高手指點 如圖，感恩
: http://miupix.cc/pm-FMFNIE
定座標, 令圓心在 (0,0), 水平為 x 軸
下方碰觸點的 y 座標是 -(70/2 - 20) = -15
x 座標為 √(35^2-15^2) = 10√10
上方碰觸點的 y 座標是 -15 + 45 = 30
x 座標為 -√(35^2-30^2) = -5√13
所求即為 (後者 x 座標 + 84/2) 減去 (前者 x 座標 - 75/2)
= 159/2 - 10√10 - 5√13 ≒ 29.8495
--
'Oh, Harry, don't you see?' Hermione breathed. 'If she could have done
one thing to make absolutely sure that every single person in this school
will read your interview, it was banning it!'
---'Harry Potter and the order of the phoenix', P513
--
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※ 編輯: LPH66 (123.195.39.85), 03/01/2016 00:24:02
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