(a) Assess the stability of the wedge formed from intersection of the two joint planes with the face of a wall slope dipping 57 at clip direction 293, or briefly shown as (57l293). The dip and dip direction for the two joint sets are as followsjoint Set 1: (40l40). Joint Set 2: (34\"l33ii). Joint planes are assumed to have no cohesive resistance (C = 0) and their friction angle (q): phi) is assumed to be the same for both joint sets and equal to 24