From the beam shown with fixed end support at A and rollers at B and C respectively, it carries a uniform load of 2 KN/m along span AB and a concentrated load of 12 KN at the mid span of BC. Using slope deflection method and constant value of El with E = 200,000 MPa and I = 400 x 106 mm4. What is the slope at B in radian? Express your final answer in absolute value and use four decimal places. A 2 kN/m 24 m BO 12 kN 8 m C