Problem 1: Two flat mirrors are connected to each other such that they make an angle of y. A laser enters the system and first reflects off the bottom mirror, then the top mirror. When the beam exits it makes an angle of 0-107 degrees with respect to the initial beam (see figure). U= 0 Part (a) Write an expression for the angle, y, between the mirrors. Part (a) Write an expression for the angle, y, between the mirrors. Part (b) Calculate this angle, y, in degrees.

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