The beam is to be hoisted using two chains. If the resultant force is to be 600 N directed...

The beam is to be hoisted using two chains. If the resultant force is to be 600 N directed along the positive y axis, determine the magnitudes of forces FA and FB acting on each chain and the angle θ of FB so that the magnitude of Fb is a minimum. FA acts at 30° from the y axis, as shown.