please answer the question

Asked by  | 31st May, 2009, 12:43: PM

Expert Answer:

tan A = 1/2  ,so  A = tan-11/2

tan B = 1/3  ,so B = tan-11/3

A + B = tan-11/2 + tan-11/3

           =tan-1[{1/2 +1/3 } / {1 - (1/2)(1/3)}]

            = tan-11

A + B = /4

Answered by  | 31st May, 2009, 11:09: PM

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