The Terminal Side Of $\theta$ Line $- 15 x - 8 y = 0$

Multiple Choice

The terminal side of $\theta$ line $- 15 x - 8 y = 0$ in the fourth quadrant.Find the exact value of $\cos \theta$ .

A) $\cos \theta = \frac { 8 } { 17 }$
B) $\cos \theta = \frac { 8 } { 25 }$
C) $\cos \theta = \frac { 25 } { 52 }$
D) $\cos \theta = \frac { 17 } { 8 }$
E) $\cos \theta = \frac { 25 } { 17 }$