## Precalculus (6th Edition)

$143^\circ 20'$
In this kind of addition, we add the degrees with the degrees and the minutes with the minutes: $110^\circ25'+32^\circ 55'=(110+25)^\circ+(25+55)'=142^\circ 80'$ This can be rewritten as: $142^\circ 80'=142^\circ +60' +20'=143^\circ 20'$