A Ferris wheel with radius \( 40 \) feet completes \( 1 \) revolution every \( 60 \) seconds. The lowest point on the wheel is \( 5 \) feet above the ground.
a) Draw the graph of the situation, starting with a person getting on at the bottom of the wheel at time t=0 seconds. Assume the person get to ride for two revolutions. [6 marks]
b) Determine an equation (cosine) representing the path of a person on the Ferris wheel. [4 marks]
c) Determine how high the person will be after riding for \( 40 \) seconds. [2 marks]