Chapter 12.3, Problem 12TE

a.

To determine

To plot: The graph of $T=62-18\cos \left[\frac{2\pi \left(t-23\right)}{365}\right]$ using the viewing window $\left[0,365\right]\times \left[20,80\right]$.

b.

To determine

To find: The absolute extrema of a function $T=62-18\cos \left[\frac{2\pi \left(t-23\right)}{365}\right]$.