Angle Between Velocity and Acceleration Vectors

The position of a particle moving in the xy-plane is given by the vector $\vec{r}(t) = (3t^2 - 2t)\hat{i} + (4t^3)\hat{j}$, where $\vec{r}$ is in meters and $t$ is in seconds. What is the angle between the particle’s velocity and acceleration vectors at time $t = 2$ s?