The Letters R and θ Represent Polar Coordinates $r = 10 \sin \theta$

Multiple Choice

The letters r and θ represent polar coordinates. Write the equation using rectangular coordinates (x, y) .
- $r = 10 \sin \theta$

A) $\sqrt { x ^ { 2 } + y ^ { 2 } } = 10 y$
B) $\sqrt { x ^ { 2 } + y ^ { 2 } } = 10 x$
C) $x ^ { 2 } + y ^ { 2 } = 10 x$
D) $x ^ { 2 } + y ^ { 2 } = 10 y$