Trigonometry (10th Edition)

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

Chapter 2 - Acute Angles and Right Triangles - Section 2.3 Finding Trigonometric Function Values Using a Calculator - 2.3 Exercises: 41

Answer

$\sin$$^{2}$ 36$^{\circ}$ + $\cos$$^{2}$ 36$^{\circ}$ $\approx$ 1

Work Step by Step

$\sin$$^{2}$ 36$^{\circ}$ + $\cos$$^{2}$ 36$^{\circ}$ Utilizing a calculator: $\sin$$^{2}$ 36$^{\circ}$ + $\cos$$^{2}$ 36$^{\circ}$ $\approx$ 0.34549150 + 0.65450849 $\sin$$^{2}$ 36$^{\circ}$ + $\cos$$^{2}$ 36$^{\circ}$ $\approx$ 0.99999999 $\sin$$^{2}$ 36$^{\circ}$ + $\cos$$^{2}$ 36$^{\circ}$ $\approx$ 1 Therefore: $\sin$$^{2}$ 36$^{\circ}$ + $\cos$$^{2}$ 36$^{\circ}$ $\approx$ 1
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.