Solve this : Q. Find the sum of the series : tan - 1 1 2 . 1 2 + tan - 1 1 2 . 2 2 + tan - 1 1 2 . 3 2 + . . . . . . . . . . . ∞ Share with your friends Share 0 Md.Ashraf Khan answered this 0 View Full Answer