Question

x=BsecA+AtanA
y=BtanA+Aseca
prove that x2-y2=b2-a2

Answer 1

Three identical bodies of mass M are located at the vertices of an equilateral triangle with side L. At what speed must they move if they all revolve under the influence of one another's gravity in a circular orbit circumscribing the triangle while still preserving the equilateral triangle