$W(t)$ models the daily water level (in $\text{cm}$) at a pond in Arizona, $t$ days after the hottest day of the year. Here, $t$ is entered in radians.
>$W(t) = 15\cos\left(\dfrac{2\pi}{365}t\right) + 43$
**What is the first time after the hottest day of the year that the water level is $30 \text{ cm}$?**
*Round your final answer to the nearest whole day.*
[[☃ numeric-input 1]] days