Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Chapter 1 - Review Exercises: 13

Answer

$80^{\circ};60^{\circ};40^{\circ}$

Work Step by Step

1. The sum of the angles in the trinagle is 180 degrees-> then construct following equation. (5x+5)+(4x)+(4x-20)=180 13x-15=180 13x=175 x=15 2. Plug x value in 5(15)+5=80 4(15)=60 4(15)-20=40
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.