On the farm operates vertical force F. When any value in degrees of angle a support reaction RA = 2F?

Within 2-3 days after payment you will receive the solution of 2.4.28 (Chapter 1 - statics topic - 2.4: Balance arbitrary plane system of forces.) In theoretical mechanics from the collection of short tasks Kep OE, JA Viba, OP Grapis, JA Svetinysh and others. Publishing Moscow / Graduate School / 1989, 2009, 2012. The task is made in the format word (typed or hand-written decision in a Word) or in manuscript form in the format gif, packed to the archive zip (open on any PC) .After checking the solutions would be very grateful if you leave your positive feedback.