Solve the problem.
-The average daily temperature T of a city in the United States is approximated by $$T = 55 - 23 \cos \frac { 2 \pi } { 365 } ( t - 30 )$$ where t is in days, $$1 \leq \mathrm { t } \leq 365 \text {, }$$ nd t = 1 corresponds to January 1. Find the period of T.

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The Answer of Solve the problem.
-The average daily temperature T of a city in the United States is approximated by $$T = 55 - 23 \cos \frac { 2 \pi } { 365 } ( t - 30 )$$ where t is in days, $$1 \leq \mathrm { t } \leq 365 \text {, }$$ nd t = 1 corresponds to January 1. Find the period of T.

Solve the Problem T=55−23cos⁡2π365(t−30)T = 55 - 23 \cos \frac { 2 \pi } { 365 } ( t - 30 )T=55−23cos3652π​(t−30)

Solve the Problem $T = 55 - 23 \cos \frac { 2 \pi } { 365 } ( t - 30 )$