# Chapter 2 - Section 2.2 - Calculators and Trigonometric Functions of an Acute Angle - 2.2 Problem Set: 7

$89^{\circ} 40'$

#### Work Step by Step

$51^{\circ} 55'$ + $37^{\circ} 45'$ $51^{\circ} 55'$ $37^{\circ} 45'$ _____ $88^{\circ} 100'$ carrying $60'$ i.e. $1^{\circ}$ from minute column to the degree column, we get the desired sum as- $88^{\circ} 100'$ = $89^{\circ} 40'$

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