Monochromatic light of wavelength l is incident on a pair of slits separated by 2.40 104 m, and forms an interference pattern on a screen is placed 1.80 m away from the slits. The fi rst-order bright fringe is 4.52 mm from the center of the central maximum. (a) Draw a picture, labeling the angle u and the legs of the right triangle associated with the fi rst-order bright fringe. (b) Compute the tangent of the angle u associated with the fi rst-order bright fringe. (c) Find the angle corresponding to the fi rst-order bright fringe and compute the sine of that angle. Are the sine and tangent of the angle comparable in value