(Solved): The link lengths of a planar four-bar mechanism are L1=120,L2=60,L3=140, and L4=80. Find the orient ...

The link lengths of a planar four-bar mechanism are $$L1=120,L2=60,L3=140$$, and $$L4=80$$. Find the orientation of links 3 and 4 when the internal angle between the crank and the fixed link is 45 degrees. (Note that there are two possible positions. If you find both, you will receive 5 extra credit points.)