Use Identities to Find the Indicated Value for Each Angle $\cos 2 \theta = - \frac { 3 } { 8 }$

question 49

Multiple Choice

Use identities to find the indicated value for each angle measure.
- $\cos 2 \theta = - \frac { 3 } { 8 }$ and $\frac { \pi } { 2 } < \theta < \pi \quad$ Find $\sin \theta$ .

• A) \(\sin \theta = - \frac { \sqrt { 11 } } { 4 }\)
• B) \(\sin \theta = \frac { \sqrt { 11 } } { 4 }\)
• C) \(\sin \theta = 0\)
• D) \(\sin \theta =\)