Two triangulation stations A and B, B being on the right of A, have cylindrical signals of diameter 4 m and 3 m, respectively. The observations were made on A on the bright portion and on B on the bright line, and the measured angle AOB at a station O was 441532.The distances OA and OB were measured as 4015 m and 5635 m, respectively. The angle which the sun makes with the lines joining the station O with A and B was 42. Calculate the correct angle AOB.