Find the Slope of the Polar Curve at the Indicated $$\mathrm { r } = 1 - \sin \theta , \theta = \frac { \pi } { 2 }$$

Multiple Choice

Find the slope of the polar curve at the indicated point.
- $$\mathrm { r } = 1 - \sin \theta , \theta = \frac { \pi } { 2 }$$

A) $\sqrt { 3 }$
B) 2
C) $\frac { 1 } { 2 }$
D) undefined