Question

(sorry the picture is sideways, i couldn’t type in the problem directly hopefully this will do)

Answer 1

The angle can be expressed as,

$\begin{gathered} \frac{13\pi}{6}=(2\pi+\frac{\pi}{6}_{}) \\ \end{gathered}$

So, the angle can be drawn as,

To find the reference angle if the angles is greeter than 2π, we first subtract 2π from the angle(here 13π/6) until it is below 2π.

$\frac{13\pi}{6}-2\pi=\frac{\pi}{6}$

So, the reference angle is π/6.