7 YA B y=1 -2cos3x The diagram shows part of the graph of y = 1 - 2cos 3x, which crosses the x-axis at the point A and has a maximum at the point B.{i} Find the coordinates of Ar [2] (ii) Find the coordinates of B. [2] (iii) Showing all your working, nd the area of the shaded region bounded by the curve, the xaxis and the perpendicular from B to the x-axis. [4]