My Math Forum solving equation problem

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 September 29th, 2008, 03:19 AM #1 Newbie   Joined: Sep 2008 Posts: 3 Thanks: 0 solving equation problem Hello! I have a math problem (i'm writing a computer program). I want to get new position of a point by inputing angles. I need to get x, y and z coordinates of a point sEP from three equations... I'll write them: .....................K1 * (sEP.X - K2) + K3 * (sEP.X - K2) aCosVF = ----------------------------------------------------------------- , .............Sqrt(number) * Sqrt( (sEP.X - K2)^2 + (sEP.Y - K4)^2 ) ......................K5 * (sEP.Y - K4) + K6 * (sEP.Z - K7) aCosVS = ------------------------------------------------------------------ , ............Sqrt(number2) * Sqrt( (sEP.Y - K4)^2 + (sEP.Z - K7)^2 ) ......................K1 * (sEP.X - K2) + K8 * (sEP.Z - K7) aCosH = ----------------------------------------------------------------- , ...........Sqrt(number3) * Sqrt( (sEP.X - K2)^2 + (sEP.Z - K7)^2 ) where K1,...,K7 and aCosVF, aCosVS and aCosH are given numbers. I need to get the equations from 3D point sEP, that means sEP.X, sEP.Y and sEP.Z. I'm not much of a mathematician so if anyone has the knowledge and time i would be most grateful!! Thanks. PS: please ignore the dots in front of K1, K5 and Sqrt because they are for aligning ...
 September 30th, 2008, 01:51 AM #2 Newbie   Joined: Sep 2008 Posts: 3 Thanks: 0 Re: solving equation problem Hello again, i have done some calculating and have another question: is there any way to lose the sqrt in expresion: sqrt(1 - x^2 / y^2) ??? Thanks...

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