How do you evaluate #tan^-1(-1)# without a calculator?
Depending upon if the domain is restricted to
What you are trying to solve is
Since the problem deals with the inverse tangent, that means we will use the tangent function to solve the problem.
Now let's think about when
If we are rotating an angle and dealing with a right triangle, we know that
Since you are more than likely discussing radians,
If the domain is restricted to