Which answer is a polar form of the given rectangular equation?
$$x ^ { 2 } + y ^ { 2 } = 25$$
A) $r = 5$
B) $r = 25$
C) $r ^ { 2 } + \theta ^ { 2 } = 25$
D) $\theta = 25$
E) $\theta = 5$

Question

Quizplus · Accepted Answer

The given equation is a circle with a radius of 5 centered at the origin in rectangular coordinates. In polar coordinates, this translates to $r = 5$, since $r^2 = x^2 + y^2$, and here $r^2 = 25$, so $r = 5$.

Which Answer Is a Polar Form of the Given Rectangular x2+y2=25x ^ { 2 } + y ^ { 2 } = 25x2+y2=25

Which Answer Is a Polar Form of the Given Rectangular $x ^ { 2 } + y ^ { 2 } = 25$