\text { A resultant force } F \text { equal to } 350 lb \text { is necessary to hold the balloon in place. Assume that } \theta_{1}=30^{\circ} \text { and } \theta_{2}=40^{\circ} \text { The force is applied along the lines } AB \text { and } AC \text { as shown in the following figurc. The magnitude } \text { of forces along the lines } A B \text { and } A C \text { are? }