Past exam of the year 2 of the earth sciences (geology) course of the University of Oxford / 2024 / Paper 3 / 8 / a / vi / Solution

The adequately sampled record shows a yearly cycle and a daily cycle. Up to exchanging their labels,Using $365$ days per year for numerical estimates,These are angular frequencies. The corresponding ordinary frequencies are $1\mathrm{y}{\mathrm{r}}^{-1}$ and $1\mathrm{da}{\mathrm{y}}^{-1}$.