The rectangular coordinates of a point are given. Find polar coordinates for the point.
-$( 0,9 )$
A) $( 9,0 )$
B) $\left( 9 , - \frac { \pi } { 2 } \right)$
C) $( 9 , \pi )$
D) $\left( 9 , \frac { \pi } { 2 } \right)$

Question

Quizplus · Accepted Answer

The polar coordinates of a point are given by $(r, \theta)$, where $r$ is the distance from the origin to the point and $\theta$ is the angle formed with the positive x-axis. For the point $(0, 9)$, $r = 9$ and $\theta = \frac{\pi}{2}$ because the point is directly above the origin on the y-axis.

The Rectangular Coordinates of a Point Are Given (0,9)( 0,9 )(0,9)

The Rectangular Coordinates of a Point Are Given $( 0,9 )$