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 $\cos \theta$ if $\sin \theta = - \frac { 12 } { 13 }$ and $\tan \theta > 0$ .

A) $\frac { 12 } { 5 }$
B) $- \frac { 5 } { 13 }$
C) $- \frac { 13 } { 12 }$
D) $- \frac { 5 } { 12 }$