SOLUTION: Find the value of the following expression: tan^-1(1)

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Question 1138377: Find the value of the following expression: tan^-1(1)
Found 2 solutions by Boreal, ikleyn:
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
This is 1 at pi/4 and 3 pi/4

Answer by ikleyn(52873) About Me  (Show Source):
You can put this solution on YOUR website!
.
In the interval  [0,2pi),  it is  pi%2F4   and/or  5pi%2F4.


In the extended sense, it is  pi%2F4+%2B+k%2Api,  where k is any integer number.


Do not accept any different answer, since it is / (or would be) incorrect.