The coterminal angles in the given range is;
For angle
[tex]-\frac{2\pi}{3}\text{ the coterminal is -}\frac{2\pi}{3}+2\pi=\frac{-2\pi+6\pi}{3}=\frac{4\pi}{3}[/tex][tex]\text{The coterminal of }\frac{11\pi}{4}\text{ is }\frac{11\pi}{4}-2\pi=\frac{11\pi-8\pi}{4}=\frac{3\pi}{4}[/tex][tex]\text{The coterminal of }\frac{19\pi}{6}\text{ is }\frac{19\pi}{6}-2\pi=\frac{19\pi-12\pi}{6}=\frac{7\pi}{6}[/tex]
