Answer
$79.0^{\mathrm{o}}$
Work Step by Step
$(1.28m)\hat{\mathrm{i}}+(6.60m)\hat{\mathrm{j}}$ points to quadrant I.
Thus, using (3-6),
$\displaystyle \theta=\tan^{-1}(\frac{6.60}{1.28})=79.0^{\mathrm{o}}$
Fundamentals of Physics Extended (10th Edition)
by Halliday, David; Resnick, Robert; Walker, Jearl
Published by
Wiley
ISBN 10:
1-11823-072-8
ISBN 13:
978-1-11823-072-5
Chapter 3 - Vectors - Problems - Page 58: 22c
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