Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 14 Trigonometric Graphs, Identities, and Equations - 14.7 Apply Double-Angle and Half-Angle Formulas - 14.7 Exercises - Skill Practice - Page 959: 2

Answer

See answer Below.

Work Step by Step

1) The trigonometric function $Sine$ is positive in the First and Second Quadrant. 2) The trigonometric function $Cosine$ is positive in the First and Fourth Quadrant.
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