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

Question

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

Quizplus · Accepted Answer

The Answer of 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) $- \frac { \sqrt { 30 } } { 10 }$

Use the Information Given About the Angle θ, 0 ≤θ cos⁡θ=−35,sin⁡θ>0\cos \theta = - \frac { 3 } { 5 } , \quad \sin \theta > 0 \quadcosθ=−53​,sinθ>0

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