Evaluate the Expression $\cot \theta$ , Given That $\cos \theta = \frac { 15 } { 17 }$

Multiple Choice

Evaluate the expression.
-Find $\cot \theta$ , given that $\cos \theta = \frac { 15 } { 17 }$ and $\theta$ is in quadrant IV.

A) $\frac { 17 } { 15 }$
B) $- \frac { 15 \sqrt { 2 } } { 2 }$
C) $- \frac { 15 } { 8 }$
D) $- \frac { 8 } { 15 }$