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jason
Posts:
16
Registered:
4/30/07


locus
Posted:
Jul 4, 2007 6:03 AM


what is the locus of the point of intersection of the lines xcos ?+ ysin ?= a , xsin ?  ycos ? =a
i know it's x^2 + y^2 = 2a^2 but i dont get why this is the locus???



