Answer
$\frac{\pi}{12}rad$
Work Step by Step
We know that-
$1^{\circ}$ = $\frac{\pi}{180}rad$
Therefore
$15^{\circ}$ = $15\times\frac{\pi}{180}rad$
= $\frac{\pi}{12}rad$
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 6 - Section 6.1 - Angle Measure - 6.1 Exercises - Page 478: 5
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