Resection is commonly known as the " three-point-problem " from a minimum of 3 control points, the position of an unknown point can be determined by measuring the resection angle A and B.
resection with a unique solution unless the unknown point(P) and the control points (L, M ,M) line of the circumference of the same circle.
In such a case, the resection becomes indeterminate or commonly known as "singularity