Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 6 - Section 6.5 - The Law of Sines - 6.5 Exercises - Page 514: 17

Answer

$\angle A=100^{\circ}$ $a=89.4$ and $c=70.5$

Work Step by Step

I. Need to find the last angle. $\angle A+29^{\circ}+51^{\circ}=180^{\circ}$ $\implies \angle A=100^{\circ}$ II. Use law of sines formula to find $a$ and $c$ $\dfrac{\sin 100^{\circ}}{a}=\dfrac{\sin 29^{\circ} }{44}=\dfrac{\sin 51^{\circ} }{c}$ This implies that $a=\dfrac{44 \sin 100^{\circ} }{\sin 29^{\circ}}=89.4$ and $c=\dfrac{44 \sin 51^{\circ} }{\sin 29^{\circ}}=70.5$
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