Sketch the graph of
The amplitude is
Sketch maximum and minimum lines at
Also, sketch the midline at
The curve is shifted right
Since this is a sine function, it starts in the middle and goes up.
Put a locator point on the midline at
Put another point on the midline
Plot the remaining three points needed to sketch the curve.
One should be in the middle of your first two and on the midline.
One should be a maximum in the middle of the first and middle points.
The other should be a minimum in the middle of the middle and last points.