Trigonometry (11th Edition) Clone

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

Chapter 1 - Quiz (Sections 1.1-1.2) - Page 21: 4


$24^{\circ}; 20^{\circ}; 136^{\circ}$

Work Step by Step

1. Add up all angles and equal it to 180 degrees $(3x+3) + (4x-8) +(13x+45)= 180^{\circ}$ 2. Solve for x: $20x +40 =180 $ $20x=140$ $x=7$ 3. Replace the x to find angles $3(7)+3=24^{\circ}$ $13(7)+45=136^{\circ}$ $4(7)-8=20^{\circ}$
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