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Find the Exact Value Under the Given Conditions cos⁡α=13,0<α<π2;sin⁡β=−12,−π2<β<0\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⁡α=13,0<α<π2;sin⁡β=−12,−π2<β<0\cos \alpha = \frac { 1 } { 3 } , 0 < \alpha < \frac { \pi } { 2 } ; \quad \sin \beta = - \frac { 1 } { 2 } , - \frac { \pi } { 2 } < \beta < 0 \quad Find tan⁡(α+β) \tan ( \alpha + \beta ) .


A) 93+823\frac { 9 \sqrt { 3 } + 8 \sqrt { 2 } } { 3 }
B) 93+825\frac { 9 \sqrt { 3 } + 8 \sqrt { 2 } } { 5 }
C) 93−825\frac { 9 \sqrt { 3 } - 8 \sqrt { 2 } } { 5 }
D) 93−823\frac { 9 \sqrt { 3 } - 8 \sqrt { 2 } } { 3 }

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