How do you convert Y=4x^2Y=4x2 into polar form? Precalculus Polar Coordinates Converting Equations from Polar to Rectangular 1 Answer Bdub Sep 12, 2017 see below Explanation: Use the formula x = r cos theta, y = r sin thetax=rcosθ,y=rsinθ Hence, y=4x^2y=4x2 r sin theta = 4r^2 cos^2 thetarsinθ=4r2cos2θ :. 0=4r^2 cos^2 theta -r sin theta Answer link Related questions What is the polar equation of a horizontal line? What is the polar equation for x^2+y^2=9? How do I graph a polar equation? How do I find the polar equation for y = 5? What is a polar equation? How do I find the polar equation for x^2+y^2=7y? How do I convert the polar equation r=10 to its Cartesian equivalent? How do I convert the polar equation r=10 sin theta to its Cartesian equivalent? How do you convert polar equations to rectangular equations? How do you convert r=6cosθ into a cartesian equation? See all questions in Converting Equations from Polar to Rectangular Impact of this question 15697 views around the world You can reuse this answer Creative Commons License