The discussion revolves around solving two equations involving variables \varthetaa and \varthetab, but the original poster (OP) realizes that there are four variables and only two equations, making it impossible to find a unique solution. The equations presented are 400cos \varthetaa = 300 + Vacos45 and 400sin \varthetab = Vbsin45. The OP expresses confusion about how to proceed, suggesting squaring the equations as a potential method. Ultimately, the OP acknowledges the limitation of the problem and has created a new thread to seek further assistance. The complexity of the equations highlights the need for additional information to solve for the variables effectively.