12. The following data represents the average percent possible sunshine for a certain city in Indiana. Use a graphing utility to find the sinusoidal function of best fit for the data. Month, x January, 1 February, 2 March, 3 April, 1 May, 5 June, 6 July, 7 August, S September, 9 October, 10 November, 11 December, 12 Average Percent of Possible Sunshine 46 51 55 60 68 73 75 74 68 62 41 38​