Chapter 4 - Section 4.1 - Angles and Radian Measure - Exercise Set - Page 532: 47

Quadrant II

$\frac{-5\pi}{4}$ radians It is a negative angle and obtained by rotating the terminal side clockwise $\frac{5\pi}{4}$ = $\pi$ + $\frac{\pi}{4}$ radians. We use |$\frac{-5\pi}{4}$| or $\frac{5\pi}{4}$ to determine the rotation. So $\frac{-5\pi}{4}$ radians lies in quadrant II. Find the attachment.