Leanne and Kerry are hiking in the mountains. They left Leanne's car in the parking lot and walked northwest for
12.4 km to a campsite. Then they turned due south and
walked another 7.0 km to a glacier lake. The weather
was taking a turn for the worse, so they decided to plot
a course directly back to the parking lot. Kerry
remembered, from the map in the parking lot, that the
angle between the path to the campsite and the path to
the glacier lake measures about 30°.
What compass direction should they follow to return
directly to the parking lot?
Lake
current
position
30
parking
lot