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EverLearning · Jun 18th, 2005, 8:19 PM

Is the trajectory circular with a certain radius, i.e. is it a unit circle?
If the problem were the other way around, it would have been a piece of cake, you would not have needed this extra information about radius, it would cancel out:
take arctan(y/x) and you have the angle!

EDIT:
Anyway, if the radius (r) is known or figured out somehow, then sin(a) = y/r, cos(a) = x/r; a - is the angle measured from the positive x-axis; so then you can get x and y.

Jun 18th, 2005, 8:19 PM	#2
EverLearning Hobbyist Programmer Join Date: May 2005 Location: Indiana Posts: 130 Rep Power: 4	Is the trajectory circular with a certain radius, i.e. is it a unit circle? If the problem were the other way around, it would have been a piece of cake, you would not have needed this extra information about radius, it would cancel out: take arctan(y/x) and you have the angle! EDIT: Anyway, if the radius (r) is known or figured out somehow, then sin(a) = y/r, cos(a) = x/r; a - is the angle measured from the positive x-axis; so then you can get x and y. __________________ got math? yumm... "All men by nature desire to know" -Aristotle, Metaphysics Last edited by EverLearning; Jun 18th, 2005 at 8:36 PM.