(9) (10pts) Find the distance between the parallel lines given by L1 : x = 2t - 1, y = t +2, and z = -t +5 and L2 : x = 2t + 1, y = t - 3, and z = -t - 2.(4) (10pts) Find polar coordinates of horizontal or vertical tangency, if any, to r = sin 0. (The following graph is given in a rectangular coordinate system with 0