Inverse Trigonometric FunctionHard
Question
The sum of the infinite terms of the series -
cot-1
+ cot-1 
+ cot-1 
+ ......... is equal to -
cot-1
+ cot-1 + cot-1 + ......... is equal to -Options
A.tan-1 (1)
B.tan-1 (2)
C.tan-1 (3)
D.
- tan-1 3
- tan-1 3
= cot-1 
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