How do you write this equation in polar coordinates: x^2 + y^2 = 2? Precalculus Polar Equations of Conic Sections Writing Polar Equations for Conic Sections 1 Answer Alan P. Jun 13, 2016 {(r,theta):r^2=2} Explanation: x^2+y^2=2 is a circle with radius (r) equal to 2 Note that the angle (theta) is not constrained by this equation (similar to the way y is not constrained by the linear equation x=5) Answer link Related questions How do you identify conic sections? What is the meaning of conic section? What is the standard equation of a circle? What is the standard equation of a parabola? What is the standard equation of a hyperbola? Which conic section has the polar equation r=1/(1-cosq)? Which conic section has the polar equation r=2/(3-cosq)? Which conic section has the polar equation r=a sintheta? How do you find a polar equation for the circle with rectangular equation x^2+y^2=25? What are the polar coordinates of (x-1)^2-(y+5)^2=-24? See all questions in Writing Polar Equations for Conic Sections Impact of this question 1520 views around the world You can reuse this answer Creative Commons License