JEE Main 26 June 2022 Shift 1 Solved Paper

A light ray is incident, at an incident angle θ1, on the system of tow plane mirrors M1 and M2 having an inclination angle 75∘ between them (as shown in figure). After reflecting from mirror M1 it gets reflected back by the mirror M2 with an angle of reflection 30∘. The total deviation of the ray will be_____ degree.