l. Marko rides 10 km north of his home on his mountain bike. He reaches an abandoned railroad, turns through an angle of 120 onto the railroad, and then rides another 20km. a) Draw a diagram to model this situation. ~ b) Determine an exact value for Marko's distance 'om home. ~ 2. A robot arm is used to cap bottles on an assembly line. The vertical position, y, in centimetres, of the arm aer t seconds can be modelled by the function Y = 30 sin [360(t 0.25)] + 45. a) Determine the amplitude, period, phase shift and vertical shift. u b) What is the lowest vertical position that the arm reaches?\" Scanned With CamScanner