I need some help it’s algebra 1

Just tell me how to set up the equation.

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!