Trigonometry (10th Edition)

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

Chapter 2 - Acute Angles and Right Triangles - Section 2.2 Trigonometric Functions of Non-Acute Angles - 2.2 Exercises: 10

Answer

sin A = positive cos A = negative tan A = negative

Work Step by Step

In Quadrant 2, the x-value is negative whlie the y-value is positive. sin A = (+)/(+) = +ve cos A = (-)/(+) = -ve tan A = sin A / cos A = +/- = -ve
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