(a) Evaluate $\tan v$ if $v= 48$ degrees.
$\tan v =$

(b) Evaluate $\arctan t$ if $t = 48$.
$\arctan t =$ degrees

(c) Evaluate $\tan^{-1} w$ if $w = 48$.
$\tan^{-1} w =$ degrees

(d) Evaluate $(\tan \phi )^{-1}$ if $\phi = 48$ degrees.
$( \tan \phi) ^{-1} =$