A skier skis CCW along a circular ski trail that has a radius of 1.2 km. She starts at the northern most point of the trail and travels at a constant speed, sweeping out 3.5 radians per hour. Let t represent the number of hours since she started skiing. Required:
a. Write an expression in terms of t to represent the number of radians that would need to be swept out from the East side of the ski trail to reach the skier's current position.
b. Write an expression in terms of t to represent the skier's distance to the East of the ski trail (in km)
c. Write an expression in terms of t to represent the skier's distance to the North of the ski trail (in km).