Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 2 - Section 2.2 - Calculators and Trigonometric Functions of an Acute Angle - 2.2 Problem Set: 35


$\cos 18^{\circ}$ = 0.9510

Work Step by Step

Using calculator in degree mode- $18$ → $\cos$ →→ 0.9510565163 i.e. $\cos 18^{\circ}$ = 0.9510565163 Rounding it to four places past the decimal point- $\cos 18^{\circ}$ = 0.9510
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.