The two bars AC and BC of the truss shown have identical axial stiffness K = 1 kN/mm. When forces of magnitudes P and Q are applied as shown on the pin C, the pin is observed to displace 2 mm to the right (in the + direction) and 3 mm down (in the - direction). 45 30 P x B Your task is to determine P and Q. The following steps will be helpful: (a) Calculate the elongations AC, BC of the two bars (in mm). (b) Calculate the CCW rotation of bar BC (in degrees). Assume that LBC = 1m. (c) Calculate the numerical value of the internal normal forces NAC, NBC in each of the two bars (in kN). (d) Calculate the magnitudes P and Q of the applied forces (in kN).