Solve the Problem $\cos 2 \theta = - \frac { 24 } { 25 }$

question 7

Multiple Choice

Solve the problem.
-If $\cos 2 \theta = - \frac { 24 } { 25 }$ , and $\frac { \pi } { 2 } < 2 \theta < \pi$ , then find $\sin \theta$ .

• A) \(\frac { 7 } { 5 }\)
• B) \(- \frac { 7 } { 5 }\)
• C) \(\frac { 7 \sqrt { 2 } } { 10 }\)
• D) \(- \frac { 7 \sqrt { 2 } } { 10 }\)

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