The drawing shows a uniform horizontal beam attached to a vertical wall by a frictionless hinge and supported from below at an angle ? = 42° by a brace that is attached to a pin. The beam has a weight of 339 N. Three additional forces keep the beam in equilibrium. The brace applies a force Parrowbold to the right end of the beam that is directed upward at the angle ? with respect to the horizontal. The hinge applies a force to the left end of the beam that has a horizontal component Harrowbold and a vertical component Varrowbold. Find the magnitudes of these three forces.