#### Answer

$77.2025^{\circ}$

#### Work Step by Step

1. Convert minutes and seconds into degrees by dividing them by 60 and by 3600 respectively. Then add up in degrees
$77^{\circ}+\frac{12}{60}+\frac{9}{3600} =77^{\circ}+0.2^{\circ}+0.0025^{\circ}=77.2025^{\circ}$