## Trigonometry 7th Edition

Chapter 2 - Section 2.3 Problem Set: 32 (Answer) Refer to Figure I, $\angle A$ = $36.5^{\circ}$ $c = 902$ mm (To three significant digits) $a = 536$ mm (To three significant digits)
Chapter 2 - Section 2.3 Problem Set: 32 (Solution) Refer to Figure I, ($\angle B$ = $53^{\circ}30{}'$ = $53.5^{\circ}$) $\angle A$ + $\angle B$ + $90^{\circ}$ = $180^{\circ}$ ($\angle$ sum of $\triangle$) $\angle A$ + $53.5^{\circ}$ + $90^{\circ}$ = $180^{\circ}$ $\angle A$ = $36.5^{\circ}$ $\sin 53.5^{\circ} = \frac{b}{c}$ $c = \frac{725}{\sin 53.5^{\circ}}$ $c = 902$ mm (To three significant digits) $\tan 53.5^{\circ} = \frac{b}{a}$ $a = \frac{725}{\tan 53.5^{\circ}}$ $a = 536$ mm (To three significant digits)