that θ−x is actually 180+2θ−x
with respect to x-axis
When it emerges out, it should be 180−2θ+x
with respect to x.
Considering our original x, the deviation is 180−2θ ... since it is in opposite direction, we should add 180 to it which makes
360−2θ
we take succesive images of every image on its opposite mirror till the image finally ends to the other side of the opposite mirror...
u should end up getting a arithmetic series for the angle for the image formed first 1 and i.this angle should not exceed 180 degree as the image will go behind the mirror..then the total no will be added for both to get the formula.
