Final answer:
The length and orientation of the third side of a triangular piece of land cannot be determined without additional information such as the angle between the two known sides or vector coordinates.
Step-by-step explanation:
The question at hand involves calculating the length and orientation of the third side of a triangular piece of land when given the lengths of two sides. In mathematics, specifically within the topic of vectors and geometry, to determine the third side's length, one may use the Law of Cosines if the angle between the given sides is known, although the question does not provide the angle. If we are considering the sides as vectors, we could calculate the displacement vector from B to A as the difference between vector B and vector A (assuming they are positioned tip-to-tail). However, without additional information about the angle or coordinates for vectors A and B, the result cannot be accurately determined. Typically, in terms of fencing, the orientation would refer to the angle of the fence line in relation to a given reference line, such as due north.