Use the Fundamental Identities to Find the Value of the Trigonometric

Multiple Choice

Use the fundamental identities to find the value of the trigonometric function.
-Find $\tan \theta$ if $\cos \theta = \frac { 1 } { 4 }$ and $\theta$ is in quadrant IV.

A) 4

B) $- \sqrt { 15 }$

C) $- \sqrt { 17 }$

D) $- \frac { \sqrt { 15 } } { 15 }$