Question 1032800
The maximum value for any cosine or sine function is 1; therefore, the coefficient of each function determines which one has the largest maximum y value.
2 cos(x) has a maximum value for x=0 or 2 pi, and it is 2.
3 sin(x+pi) has a maximum value for x=3pi/2 or -pi/2, and it is 3.  The function that has a value of (0,2) is the cosine; the other is the sine.
{{{graph(300,200,-2,7,-3,4,2cos(x),3sin(x+pi))}}}