Solution Exercise 3
[latex]{\mathrm{\Delta}h}_{ab}[/latex] = 2 [latex]m[/latex]
[latex]{\mathrm{\Delta}l}_{ab}[/latex] = 5 m
Vertical gradient (a-b) = [latex]\frac{2\ m}{5\ m}[/latex] = 0.364
The gradient is downward.
[latex]{\mathrm{\Delta}h}_{bc}[/latex] = 1 m
[latex]{\mathrm{\Delta}l}_{bc}[/latex] = 1,500 m
Horizontal gradient (b-c) = 1 m/1,500 m = 0.00067
The gradient is from left to right in Figure 9.