Answer
$\pi$, $\frac{\pi}{2}$, $\frac{\pi}{2}$, out of phase
Work Step by Step
The phase of A is $\pi$, and the phase of B is $\frac{\pi}{2}$, so the objects are moving $\frac{\pi}{2}$ out of phase.
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 5 - Section 5.6 - Modeling Harmonic Motion - 5.6 Exercises - Page 456: 4
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