The letters r and θ represent polar coordinates.

Mathematics
Tutor: None Selected Time limit: 1 Day

Mar 21st, 2015

from r = sqrt(x^2+y^2) = 1+y/sqrt(x^2+y^2) 

multiply both sdies by sqrt(x^2+y^2), we have 

x^2+y^2 = sqrt(x^2+y^2) +y, the third answer is right

Mar 21st, 2015

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Mar 21st, 2015
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Mar 21st, 2015
Dec 7th, 2016
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