Use identities to find the indicated value for each angle measure.
-$\sin \theta = - \frac { 4 } { 5 } , \frac { 3 \pi } { 2 }

Question

Use identities to find the indicated value for each angle measure.
-$\sin \theta = - \frac { 4 } { 5 } , \frac { 3 \pi } { 2 } < \theta < 2 \pi \quad$ Find $\cos ( 2 \theta )$.
A) $\frac { 24 } { 25 }$
B) $- \frac { 24 } { 25 }$
C) $\frac { 7 } { 25 }$
D) $- \frac { 7 } { 25 }$

Quizplus · Accepted Answer

The Answer of Use identities to find the indicated value for each angle measure.
-$\sin \theta = - \frac { 4 } { 5 } , \frac { 3 \pi } { 2 } < \theta < 2 \pi \quad$ Find $\cos ( 2 \theta )$.
A) $\frac { 24 } { 25 }$
B) $- \frac { 24 } { 25 }$
C) $\frac { 7 } { 25 }$
D) $- \frac { 7 } { 25 }$

Use Identities to Find the Indicated Value for Each Angle sin⁡θ=−45,3π2<θ<2π\sin \theta = - \frac { 4 } { 5 } , \frac { 3 \pi } { 2 } < \theta < 2 \pi \quadsinθ=−54​,23π​<θ<2π

Use Identities to Find the Indicated Value for Each Angle $\sin \theta = - \frac { 4 } { 5 } , \frac { 3 \pi } { 2 } < \theta < 2 \pi \quad$