The blades of a windmill turn on an axis that is 30 feet from the ground The blades are 10 feet long and complete 2 rotations every minute Write a sine model y asin bt k for the height in feet of the end of one blade as a function of time t in seconds Assume the blade is pointing to the right when f 0 and that the windmill turns counterclockwise at a constant rate O y 30 sin 50 10 O y 30 sin 30 Oy 10sin 10 Oy 10sin f 30