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

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