\operatorname { tan } A = \frac { 1 } { 2 } , \operatorname { tan } B – InterviewSolution

1.	\operatorname { tan } A = \frac { 1 } { 2 } , \operatorname { tan } B = \frac { 1 } { 3 } , \text { then } \operatorname { tan } ( A + B )
Answer» tan(A+B)=tanA+tanB/1-tanAtanB=1/2+1/3/1-1/2*1/3=5/6-1=5/5=1

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