How do you convert the polar equation to rectangular form?

#θ=(7π)/4#

1 Answer
iceman
Mar 5, 2018

#x+y=0#

Explanation:

Rectangular and polar conversion equations are:
x = r cos θ, y = r sin θ
r = √(x² + y² )
tan θ = y/x => θ = arctan( y/x )
So in this case:
#theta = (7pi)/4#
#tan((7pi)/4)= -1#
#y/x=-1#
#y=-x#
#x+y=0#

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