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cot^(-1) { 1^2 +3/4 } + cot^(-1) { 2^2 +3/4 } + cot^(-1) { 3^2 +3/4 } + …..... = ??? pi/4 tan^(-1)2 tan^(-1)3 none of these

cot^(-1) { 1^2 +3/4 } + cot^(-1) { 2^2 +3/4 } + cot^(-1) { 3^2 +3/4 } + …..... = ???
 
  1. pi/4
  2. tan^(-1)2
  3. tan^(-1)3
  4. none of these

Grade:12th pass

1 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
one year ago
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