Welcome to Bytelearn!

Let’s check out your problem:

Aditya's dog routinely eats Aditya's leftovers, which vary seasonally. As a result, his weight fluctuates throughout the year. The dog's weight $W(t)$ (in $\text{kg}$) as a function of time $t$ (in days) over the course of a year can be modeled by a sinusoidal expression of the form $a$$\cdot$$\cos(b$$\cdot$$t$$)$$+d$. $\newline$At $t=0$, the start of the year, he is at his maximum weight of $9.1\,\text{kg}$. One-quarter of the year later, when $t=91.25$, he is at his average weight of $8.2\,\text{kg}$.$\newline$ Find $W(t)$. $\newline$$t$ should be in radians. $\newline$$W(t)$ $=$ ◻