Use the Information Given About the Angle θ, 0 ≤θ $\cos \theta = - \frac { 3 } { 5 } , \quad \sin \theta > 0 \quad$

Multiple Choice

Use the information given about the angle θ, 0 ≤θ ≤ 2π, to find the exact value of the indicated trigonometric function.
- $\cos \theta = - \frac { 3 } { 5 } , \quad \sin \theta > 0 \quad$ Find $\cos \frac { \theta } { 2 }$ .

A) $- \frac { \sqrt { 5 } } { 5 }$

B) $\frac { \sqrt { 30 } } { 10 }$

C) $\frac { \sqrt { 5 } } { 5 }$

D) $- \frac { \sqrt { 30 } } { 10 }$