Reference Adjustment Calculus - Please solve with clear procedure, thank you

ASSIGNMENT 5 ERROR PROPAGATION & LINEAR PARAMETRIC LS ADJUSTMENT [100 total points] Assigned: February 15, 2023 Due: March 1, 2023 [2:59 pm] Question 1: Error Propagation [50 points] The azimuth (CAB) and the distance (dAB) of line AB (see figure below - not to scale) were measured independently. The observed values are as follows: CAB = 40 0'0" GAB = 10" dAB = 673.981 m dAB = 0.030 m Y (m) YB B YA A X (m) XA XB The coordinates of station A, determined from a previous adjustment, are as follows: XA = 2918.562 m YA = 3029.253 m With the corresponding covariance matrix: Cprevious = [0.0008 0.0009]. Lo.0009 0.0004] m2 Compute the preliminary coordinates of point B (XB, YB) and their associated covariance matrix. Show all necessary work