Temperature in Fairbanks Suppose the temperature in Fairbanks is modeled by
where T(x) is the temperature in degrees Fahrenheit on day x. with x = 1 corresponding to January 1 and x = 365 corresponding to December 31. Use a calculator to estimate the temperature, to the nearest degree, on the following days. (Source: Lando. B. and C. Lando, “Is the Graph of Temperature Variation a Sine Curve?” The Mathematics Teacher, vol. 70.)
(a) March 1 (day 60) (b) April 1 (day 91) (c) Day 150
(d) June 15 (e) September 1 (f) October 31
Refer to Figures 18 and 19, and work each problem. See Example 6.
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