Okay, here's a problem from my Statics class. Just dealing with 2 vectors, their direction and magnitude given--need to find the same for the resultant vector. If I break it down into X and Y components, I can do it quite easily....but that's not the way he wants it done. It has to be found using ONLY Sine and Cosine Laws, which I get, but am somehow getting stuck on the fact that the given angles are based upon a vertical component that is different from the resultant R after completing the parallelogram....SIMPLE, but throwing me for some reason.... Here's the problem: http://img394.imageshack.us/img394/5334/hw2paper1jt.jpg [Broken] How do I work the angles so I can apply them properly in the Sine and Cosine laws and get R figured out?