Answer:[tex]180^{\circ}[/tex]
Explanation:
we know that angle of incidence from vertical is equal to angle of reflection from mirror.
incoming ray angle [tex]\theta =30^{\circ}[/tex]
Reflected ray angle [tex]\theta =30^{\circ}[/tex]
Now this ray will incident on another mirror with angle of incidence [tex]=60^{\circ}[/tex]
reflected ray angle [tex]=60^{\circ}[/tex]
now the outgoing ray is parallel to incoming rays
angle between them is [tex]180^{\circ}[/tex]
