I have a test tomorrow and the book does not even explain it that well. Than You
Welcome to PF!
Hi e4dragon! Welcome to PF!
"In mathematics, orthogonal trajectories are a family of curves in the plane that intersect a given family of curves at right angles."
For more detail, see http://en.wikipedia.org/wiki/Orthogonal_trajectory
Is there anything particular you don't understand about orthogonal trajectories?
i understand it now, sort of. thank you
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