tan^-1 (1) is an angle and

tan^-1 (1) = π/4 = 22/(7*4) = 11/(7*2) = 11/14 = 0.7858   {π = 22/7}

tan (1) means a numerical value and

tan (1) = 0.0174

After converting tan^-1 (1) in numerical value, we get

tan^-1 (1) > tan (1)