A microscope has an objective lens with an aperture diameter 0.6 cm. A monochromatic light source of 580 nm is used to illuminate the object. It is determined that the minimum angle of resolution is 1.18 x 10^-4 rad. If the present lens were replaced by one with an aperture of diameter 0.9cm, what would the minimum angle of resolution now become? (1nm = 10^-9 m). Show work please.