A typical red blood cell subtends an angle of just 1.6×10-5 if viewed at a person's near-point distance of 25. Assume that a red blood cell is inspected with a compound microscope in which the objective and eyepiece are apart by a distance of 13.0. Given that the focal length of the eyepiece is around 2.5, and the focal length of the objective is 0.47, determine the magnitude of the angle subtended by the red blood cell if observed through the microscope.