Answers

2016-02-14T16:38:34+05:30
Tan(A+B)=1/2
tan(A-B)= 1/3
add both of them
tan (A+B)+tan(A-B)= 1/2+1/3
+B-B gets cancelled so,
tan A + tan A= 1/2+1/3
tan 2A= 5/6
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