Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 7 - Section 7.1 - The Law of Sines - 7.1 Problem Set - Page 369: 28

Answer

$y\approx21.92$

Work Step by Step

$A=55^{\circ},s=21,r=22$ $s=r\cdot C$ $21=22C$ $C=\frac{21}{22} radian$ $C=54.695^{\circ}$ By laws of sines, $\frac{r}{sinA}=\frac{y}{sinC}$ $\frac{22}{sin55^{\circ}}=\frac{y}{sin54.695^{\circ}}$ $y\approx21.92$
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