The figure shown below has the following details:
l1 = 3 cm, l2 = 1.5 cm, l3 = 3.5 cm, l4 = 4 cm. The value for θ4 (in degrees), When the input link (l2) becomes perpendicular to the fixed link for the given assembly mode will be:
1
45
2
97.44
3
65.34
4
79.44