A technician has built a device with two plane mirrors at right angles to one another. She directs a beam of light toward Mirror 1, at an incidence angle of ?1 = 36.9°. The beam travels within a plane that is perpendicular to both mirrors. The beam strikes Mirror 1, as shown below, and is reflected toward Mirror 2, where it undergoes a second reflection before leaving the device. a) How far (in m) does the beam travel between the two mirrors? b) With what angle of reflection, ?2, measured from Mirror 2's normal line, does the beam depart Mirror 2 after the second reflection? (Enter your answer in degrees.)

A technician has built a device with two plane mirrors at right angles to one another. She directs a beam of light toward Mirror 1, at an incidence angle of ?1 = 36.9°. The beam travels within a plane that is perpendicular to both mirrors. The beam strikes Mirror 1, as shown below, and is reflected toward Mirror 2, where it undergoes a second reflection before leaving the device. a) How far (in m) does the beam travel between the two mirrors? b) With what angle of reflection, ?2, measured from Mirror 2's normal line, does the beam depart Mirror 2 after the second reflection? (Enter your answer in degrees.)

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