Interchange the variables.

Rewrite the equation as .

Take the inverse arctangent of both sides of the equation to extract from inside the arctangent.

Remove parentheses.

Replace the with to show the final answer.

Set up the composite result function.

Evaluate by substituting in the value of into .

The functions tangent and arctangent are inverses.

Since , is the inverse of .

Find the Inverse Function y=arctan(x)