Let S(t) be the number of daylight hours on the th day of the year in Los Angleles. We are given the following data for S(t): Day January 16 t S(t) 16 10 March 16 75 12 May 3 July 7 123 13 188 14 We wish to fit a trigonometric function of the form f(t) = a + bsin ( -t) +c cos ( 365 t) 365 to these data. Find the best approximation of this form, using least squares. f(t) =