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 $\sec \theta = \frac { \sqrt { 10 } } { 3 }$ and $\sin \theta < 0$

A) $- 3$
B) 3
C) $- \frac { 1 } { 3 }$
D) $- \sqrt { 10 }$