2023 AMC 12A Problem 11

What is the degree measure of the acute angle formed by lines with slopes 2 and \tfrac13?

\textbf{(A)} 30 \qquad \textbf{(B)} 37.5 \qquad \textbf{(C)} 45 \qquad \textbf{(D)} 52.5 \qquad \textbf{(E)} 60

Full credit goes to MAA for authoring these problems. These problems were taken on the AOPS website.