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Plane mirrors, A, B and C, are shown below. 110.0 20.0 The angle between the incident ray and mirror A is 20.0. If the

Plane mirrors, A, B and C, are shown below. 110.0 20.0 The angle between the incident ray and mirror A is 20.0. If the angle between mirrors A and B is 110.0 and the angle between mirrors B and C is 90.0, then the final angle of reflection from mirror C is

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