As gear $\mathrm{B}$ rotates clockwise (in the detail view), gear $\mathrm{C}$ rotates counterclockwise. The magnitude of gear $\mathrm{C}$'s rotation angle is dictated by the gear ratio:

$$\begin{gathered} {\mathrm{\varphi }}_{\mathrm{C}}=-{\mathrm{\varphi }}_{\mathrm{B}}\frac{{\mathrm{N}}_{\mathrm{B}}}{{\mathrm{N}}_{\mathrm{C}}}=-(-0.050724 \mathrm{rad})\frac{24 \mathrm{teeth}}{72 \mathrm{teeth}} \\ =0.016908 \mathrm{rad} \end{gathered}$$