An optics expert places two plane mirrors at an angle of 1 = 67.7° to each other, as shown below. He then directs a horizontal laser beam toward Mirror 1. The beam reflects twice: first off Mirror 1, then Mirror 2. What angle 2 will the outgoing beam make with the surface of Mirror 2? The initial light ray is parallel to the surface of Mirror 2 before reflecting off Mirror 1.(Enter your answer in in degrees.)