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 368: 12

Answer

$a = 42$ km

Work Step by Step

1. Find the angle $A$ $A + 40 + 70 = 180$ $A + 110 = 180$ $A = 70˚$ 2. Solve for $a$ $\frac{a}{sin(70)} = \frac{42}{sin(70)}$ $a = \frac{42sin(70)}{sin(70)}$ $a = 42$ km
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.