Answer
$\pi$
Work Step by Step
$\sum\limits_{k=1}^5\frac{\pi k}{15}=\frac{\pi }{15}\cdot\sum\limits_{k=1}^5k=\frac{\pi }{15}\cdot(1+2+3+4+5)=\frac{\pi }{15}\cdot15=\pi$
University Calculus: Early Transcendentals (3rd Edition)
by Hass, Joel R.; Weir, Maurice D.; Thomas Jr., George B.
Published by
Pearson
ISBN 10:
0321999584
ISBN 13:
978-0-32199-958-0
Chapter 5 - Section 5.2 - Sigma Notation and Limits of Finite Sums - Exercises - Page 299: 22
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