Answer
$2\pi-\frac{\pi}{4}$
Work Step by Step
We know that $\frac{7\pi}{4}=2\pi-\frac{\pi}{4}$, because $2\pi-\frac{\pi}{4}=(2-\frac{1}{4})\pi=(\frac{7}{4})\pi=\frac{7\pi}{4}$.
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
Published by
Cengage Learning
ISBN 10:
1111826854
ISBN 13:
978-1-11182-685-7
Chapter 3 - Section 3.2 - Radians and Degrees - 3.2 Problem Set - Page 132: 43
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