Answer
$\theta$$^{1}$ = 45$^{\circ}$
Work Step by Step
212$^{\circ}$
The reference angle is the smallest angle that can be made between the tangent side of an angle and the x-axis. The reference angle is represented by $\theta$$^{1}$.
Therefore:
$\theta$$^{1}$ = -135$^{\circ}$ + 180$^{\circ}$
$\theta$$^{1}$ = 45$^{\circ}$
