Use the Given Information to Find the Exact Value of the Trigonometric

question 162

Multiple Choice

Use the given information to find the exact value of the trigonometric function.
- $\sin \theta = - \frac { 15 } { 17 } , \theta$ lies in quadrant IV Find $\cos \frac { \theta } { 2 }$ .

• A) \(- \frac { 5 \sqrt { 34 } } { 34 }\)
• B) \(\frac { 5 \sqrt { 34 } } { 34 }\)
• C) \(\frac { 4 } { 17 }\)
• D) \(- \frac { 3 \sqrt { 34 } } { 34 }\)

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