Question $2$: $(8$ points$)$

A model for the length of daylight $($in hours$)$ in Edmonton on the $t^{th}$ day of a non$-$leap year is given by

$($:$L(t)=6\mathrm{.}4+3\mathrm{.}6cos(\frac{2}{365}(t-173))\}$

Use this model to compare how the number of hours of daylight is increasing in Edmonton on February $14,2025$ and April $25,2025.$