Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 7 - Review Exercises - Page 553: 79



Work Step by Step

$r=\frac{1}{32}v_0^2~sin~2θ$ $v_0=80~ft/s$ and $r=100~ft$ $100=\frac{1}{32}(80)^2~sin~2θ$ $100=200~sin~2θ$ $\frac{1}{2}=sin~2θ$ $2θ=\frac{\pi}{6}=30°$ $θ=\frac{\pi}{12}=15°$
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