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back to boardShow all messages Hide all messagesAlgo. IgorKoval(from Pskov) 9 Apr 2012 02:25 What is algorithm? What formulas, theorems, equations and hints must I use? Re: Algo. IgorKoval(from Pskov) 15 May 2012 22:53 Suppose that answer is XY, where point X lies on CA and Y lies on CB. Then let CX = x, CY = y. Now you have two equations: x + y = P/2, x * y = CA * CB / 2 (P is perimeter). The rest of solution is straightforward. Re: Algo. IgorKoval(from Pskov) 16 May 2012 23:59 Thank you very much! Very good adia!
P.S.:
How get x * y = CA * CB / 2 ?
Just simple:
2 * SQUARE_CXY == SQUARE_ABX
2 * 0.5 * x * y * sinXCY == 0.5 * CA * CB * sinXCY
x * y == 0.5 * CA * CB
x * y = CA * CB / 2
I think about it several minute. =) |
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