Question 1 Given the four bank linkage shown in Figure 1. The length of the links CD, AB and BC are 1.0 m, 0.8 mand 5 m respectively. If the link CD has the rotation angle of e as shown in Table 1, determine the angles of links AB and BC by using both graphical method and complex number analytical method. Show two answers results if applicable (Note that the link BC is not necessarily horizontal). Select a single value of in Table 1 based on the Group code n. Table 1 =7 -7 Group Code n 1 2 3 4 0 (degree) 10 20 30 40 50 -60 70 80 90 100 5 6 7 8 9 Figure 1 0 GWC