What are the methods of measurement of the base line and explain any two with neat sketch. (16) 2…

What are the methods of measurement of the base line and explain any two with neat sketch. (16) 2. From an eccentric Station S, 12.25 metres to the west of the main station B, the following angles were measured BSC = 760251; CSA = 540321 2011. The stations S and C are to the opposite sides of the line AB. Calculate the correct angle ABC if the lengths AB and BC are 5286.5 and 4932.2m respectively.