A uniformly tapered bronze tube AB of circular cross section and length L=1200mm is fixed at ends A and B, as shown in Figure 5. The outside diameters at end A is Da=60mm and Db=100 mm at B. A solid titanium is titghly inserted into a hollow section of length l/2 and constan thickness t=7.5mm , and extends from end B towards end A. If a torque T0=45kn*m is applied at L/2 from end B, determine A) the reactive torques Ta and Tb B) the reactive torques Ta and Tb, if the titainum has a constant diameter da, and C) the shear streess and angle of twist at B in both materials for parts a and b.