Tornadoes Table 4 shows the total number of tornadoes in
Chapter 4, Problem 4.1.303(choose chapter or problem)
Tornadoes Table 4 shows the total number of tornadoes in the United States for various past years. A graph of this data is given in Figure 13, where we have used t to represent the year and n the number of tornadoes. Find the equation of a trigonometric function to use as a model for these data. (Source: NOAA Storm Prediction Center) Ie. The ~:~~~~r..,~~~l:Z '.,.... Year rd and 1986 r t sec1987 meters 1988 [s, and ncyof 1989 1990 :led by 1991 Dlts. If 1992 ncy is 1993 Teases 1994 omin 1.875 min 3.75 min 5.625 min 7.5 min 9.375 min 11.25 min 13.125 min 15 min Tornadoes 1,400 n 765 1,300 656 1,200 702 1,100 856 1,000 900 800 1133 1132 700 1297 600 1173 1082 Figure 13
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