In order to graph trigonometric function you need to 1) beable to determine if a function is sin or cos , you also need to be able to determine 2) The amplitude, period and midline of a function .
A sin trig function views as;
A cos trig function views as;
The formula for a trigonometric function is y=Acos(Bx) or y=Asin(Bx)
- Now you need to find the amplitude, in order to find the amplitude of the you need to locate the maximum value and the minimum value and subtract them, you then divide that number by 2. Your result serves as your amplitude or your "A" in the function.
- To locate the period of the function or your(Bx) youll be using 2(pi) over the cycle number, which if you look above to the example are the numbers on the x -axis.
- in order to determine the midline locate the max and the minimum again and then add or you can visually determine the line that is in the middle of the function horizonally. This number will serve as the number you add or subtract in your function For example; y=Acos(bx) + 6. The six wouldve been the midline of a function.
Work cite for images only:
The biology project ,april 2006, http://www.biology.arizona.edu/biomath/tutorials/trigonometric/graphtrigfunctions.html
Properties of trigonometri fucntions,http://www.analyzemath.com/trigonometry/properties.html
