1.78. Getting Back. An explorer in the dense jungles of cquato- rial Africa leaves his hut. He takes 40 steps northeast, then 80 steps 60° north of west, then 50 steps due south. Assume his steps all have equal length. (a) Sketch, roughly to scale, the three vectors Land their resultant, (b) Save the cxplorer from becoming hope- lessly lost in the jungle by giving him the displacement, calculated using the method of components, that will returm him to his hut.

1.78. Getting Back. An explorer in the dense jungles of cquato- rial Africa leaves his hut. He takes 40 steps northeast, then 80 steps 60° north of west, then 50 steps due south. Assume his steps all have equal length. (a) Sketch, roughly to scale, the three vectors Land their resultant, (b) Save the cxplorer from becoming hope- lessly lost in the jungle by giving him the displacement, calculated using the method of components, that will returm him to his hut.