Evaluate the following expressions exactly Recall that the i

Evaluate the following expressions exactly. (Recall that the inverse functions only give the specific answer in their specified ranges.) tan^-1(1)

tan^-1(1)

tan(pi/4)=1

so we get

tan^-1(tan(pi/4))

And tan^-1(tan theta) = theta

Therefore tan^-1(tan(pi/4)) = pi/4

Therefore tan^-1(1) = pi/4