Jimmy, Monica and Darcy are camping with several friends in Westview Falls. Jimmy and Monica want to go canoeing while Darcy decides to go visit friends at another campsite. Jimmy and Monica decide to meet Darcy after they go to the
lake. They leave the campsite, heading due east for 40 minutes at 6 km/h. They then turn right through an angle of 120°
and jog for another 30 minutes at 7 km/h in search of the lake. They stop to catch their breath and realize that the sun is
going to set within the hour. Since they can't find the lake they decide they had better get back to camp before dark.
a) How far away are Jimmy and Monica from their campsite and in what direction would they have to go to get back?