Trigonometry (11th Edition) Clone

Published by Pearson
ISBN 10: 978-0-13-421743-7
ISBN 13: 978-0-13421-743-7

Chapter 1 - Trigonometric Functions - Section 1.2 Angle Relationships and Similar Triangles - 1.2 Exercises - Page 15: 14

Answer

20°, 30°, 130°

Work Step by Step

1. Internal angles of a triangle have a sum of 180° (x+15)+(x+5)+(10x-20)= 180 2. Solve the equation for x x+10x+x=180-15-5+20 12x=180 x=15$^{\circ}$ 3. Then find angles by replacing x=50 (15)+15=30$^{\circ}$ (15)+5=20$^{\circ}$ 10(15)-20=130$^{\circ}$
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.

GradeSaver will pay $15 for your literature essays
GradeSaver will pay $25 for your college application essays
GradeSaver will pay $50 for your graduate school essays – Law, Business, or Medical
GradeSaver will pay $10 for your Community Note contributions
GradeSaver will pay $500 for your Textbook Answer contributions