Answer
$19^{\circ}$ $54'$
Work Step by Step
To convert $19.9^{\circ}$ to degrees and minutes, let's break it as-
$19.9^{\circ}$ = $19^{\circ}$ + $0.9^{\circ}$
Now on multiplying 0.9 by 60, we have the number of minutes equivalent
to 0.9°
Therefore
$19.9^{\circ}$ = $19^{\circ}$ + $0.9(60')$
$19.9^{\circ}$ = $19^{\circ}$ + $54'$
$19.9^{\circ}$ = $19^{\circ}$ $54'$