How do you convert #r=3cos(theta)# to rectangular form? Trigonometry The Polar System Converting Between Systems 1 Answer Binayaka C. Apr 14, 2016 In rectangular form the equation is #x^2+y^2=3*x# Explanation: We know #r^2=x^2+y^2; x=r*cos theta ; y=r*sin theta; theta=tan^-1(y/x)# #:. r=3*(x/r) or r^2 =3*x or x^2+y^2 =3*x# [Ans] Answer link Related questions How do you convert rectangular coordinates to polar coordinates? When is it easier to use the polar form of an equation or a rectangular form of an equation? How do you write #r = 4 \cos \theta # into rectangular form? What is the rectangular form of #r = 3 \csc \theta #? What is the polar form of # x^2 + y^2 = 2x#? How do you convert #r \sin^2 \theta =3 \cos \theta# into rectangular form? How do you convert from 300 degrees to radians? How do you convert the polar equation #10 sin(θ)# to the rectangular form? How do you convert the rectangular equation to polar form x=4? How do you find the cartesian graph of #r cos(θ) = 9#? See all questions in Converting Between Systems Impact of this question 22379 views around the world You can reuse this answer Creative Commons License