Functions Modeling Change: A Preparation for Calculus, 5th Edition

Published by Wiley
ISBN 10: 1118583191
ISBN 13: 978-1-11858-319-7

Chapter 8 - Triangle Trigonometry and Polar Coordinates - 8.1 Trig Functions and Right Triangles - Exercises and Problems for Section 8.1 - Exercises and Problems - Page 332: 5



Work Step by Step

First we find: $$h=\sqrt{.1^2+.2^2} = .224$$ Using trigonometry, we find: $$sin\theta = \frac{o}{h} =\frac{.1}{.224}=.446$$ And: $$cos \theta = \frac{a}{h} =\frac{.2}{.224}=.894$$
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