Convert an Equation from Polar to Rectangular Coordinates
-$$\mathrm { r } = 7$$
A) $x ^ { 2 } + y ^ { 2 } = 49$
B) $x = 7$
C) $y ^ { 2 } = 49$
D) $\mathrm { y } = 7$

Question

Quizplus · Accepted Answer

The equation $r = 7$ in polar coordinates translates to $x^2 + y^2 = 49$ in rectangular coordinates, because $r^2 = x^2 + y^2$ and squaring both sides of $r = 7$ gives $r^2 = 49$.

Convert an Equation from Polar to Rectangular Coordinates - r=7\mathrm { r } = 7r=7

Convert an Equation from Polar to Rectangular Coordinates
- $\mathrm { r } = 7$