Trigonometry (10th Edition)

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

Chapter 1 - Test: 10b

Answer

$280^{\circ}$

Work Step by Step

1. Add 360 degrees to find smallest positive coterminal angle $-80^{\circ}+360^{\circ}=280^{\circ}$
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