Find the Exact Value Under the Given Conditions $\cos \alpha = \frac { 1 } { 3 } , 0 < \alpha < \frac { \pi } { 2 } ; \quad \sin \beta = - \frac { 1 } { 2 } , - \frac { \pi } { 2 } < \beta < 0 \quad$

question 53

Multiple Choice

Find the exact value under the given conditions.
- $\cos \alpha = \frac { 1 } { 3 } , 0 < \alpha < \frac { \pi } { 2 } ; \quad \sin \beta = - \frac { 1 } { 2 } , - \frac { \pi } { 2 } < \beta < 0 \quad$ Find $\tan ( \alpha + \beta )$ .

• A) \(\frac { 9 \sqrt { 3 } + 8 \sqrt { 2 } } { 3 }\)
• B) \(\frac { 9 \sqrt { 3 } + 8 \sqrt { 2 } } { 5 }\)
• C) \(\frac { 9 \sqrt { 3 } - 8 \sqrt { 2 } } { 5 }\)
• D) \(\frac { 9 \sqrt { 3 } - 8 \sqrt { 2 } } { 3 }\)

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