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

question 33

Multiple Choice

Use the given information to find the exact value of the trigonometric function.
- $\cos \theta = \frac { 4 } { 5 } , \theta$ lies in quadrant IV Find $\cos \frac { \theta } { 2 }$ .

• A) \(- \frac { 3 \sqrt { 10 } } { 10 }\)
• B) \(\frac { 2 } { 5 }\)
• C) \(\frac { 3 \sqrt { 10 } } { 10 }\)
• D) \(- \frac { 2 } { 5 }\)

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