How do you change rectangular coordinates to polar coordinates?

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Answer 1 · 2014-09-10T07:14:13

You can use:

#r=sqrt{x^2+y^2}#

If #(x,y)# is in the first and fourth quadrant,

#theta=tan^{-1}(y/x)#.

If #(x,y)# is in the second or third quadrant,

#theta=tan^{-1}(y/x)+pi#.

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