In a Young's double-slit experiment the wavelength of light used is 476nm (in vacuum), and the separation between the slits is 2.0X10^-6m. Determine the angle that locates
(a) the dark fringe for which m = 0,
(b) the bright fringe for which m = 1,
(c) the dark fringe for which m=1, and
(d) the bright fringe for which m = 2.