A Point on the Terminal Side of an Angle θ $( 4 , - 3 ) \quad$

Multiple Choice

A point on the terminal side of an angle θ is given. Find the exact value of the indicated trigonometric function of θ.
- $( 4 , - 3 ) \quad$ Find $\cos \theta$ .

A) $\frac { 4 } { 5 }$
B) $- \frac { 4 } { 5 }$
C) $\frac { 3 } { 5 }$
D) $- \frac { 3 } { 5 }$