Two horizontal forces (8i−5j) N(8\mathbf{i}-5\mathbf{j})\text{ N}(8i−5j) N and (pi+3j) N(p\mathbf{i}+3\mathbf{j})\text{ N}(pi+3j) N act at a point, where i\mathbf{i}i points east and j\mathbf{j}j points north. Their resultant has magnitude 10 N and acts in a direction south of east.
Determine the possible value of ppp.