I assume you made a sketch . . .
Two mirrors are placed at a 90° angle to each other.
A light ray strikes one mirror 0.650 m from the intersection of the mirrors
with an incident angle of 36.5°.
The ray then travels a distance before reflecting from the second mirror.
(a) What is the distance ?
C * - - * - - -
0.65 | /d
The ray come in from , strikes the first mirror at
. . and reflects to point on the other mirror.
In right triangle m.