If ? = 30°, F1 = 5 kN, and the resultant force is to be directed along the positive y ax...

If ? = 30°, F₁ = 5 kN, and the resultant force is to be directed along the positive y axis, determine the magnitude of the resultant force if F₂ is to be .a minimum. Also, what is F₂ and the angle θ?