Find the measures of two angles, one positive and one negative, that are coterminal with the given angle.
-$\frac { 8 \pi } { 5 }$
A) $\frac { 18 \pi } { 5 } ; - \frac { 2 \pi } { 5 }$
B) $\frac { 13 \pi } { 5 } ; - \frac { 13 \pi } { 5 }$
C) $\frac { 13 \pi } { 5 } ; - \frac { 2 \pi } { 5 }$
D) $\frac { 2 \pi } { 5 } ; - \frac { 18 \pi } { 5 }$

Question

Quizplus · Accepted Answer

To find coterminal angles, you can add or subtract $2\pi$ from the given angle. For the given angle $\frac{8\pi}{5}$, adding $2\pi$ (or $\frac{10\pi}{5}$) gives $\frac{18\pi}{5}$, and subtracting $2\pi$ gives $-\frac{2\pi}{5}$.

Find the Measures of Two Angles, One Positive and One 8π5\frac { 8 \pi } { 5 }58π​

Find the Measures of Two Angles, One Positive and One $\frac { 8 \pi } { 5 }$