A2. The angle $\alpha$ is $33^{\circ}$ smaller than its complementary angle. How large is the complementary angle?
(A) $29^{\circ} 50^{\prime}$
(B) $61^{\circ} 50^{\prime}$
(C) $61.5^{\circ}$
(D) $29.5^{\circ}$
(E) $61.30^{\circ}$
A2. Write both equations $\alpha=\beta-33^{\circ}$ and $\alpha+\beta=90^{\circ}$. By solving the system, we get $\beta=61.5^{\circ}$.