Question

please sir ji question number 4 a

Answer 1

if angle 2 = 105°

then angle 4 = angle 2 = 105° ( vertically opposite angles )

angle 2 + angle 3 = 180° ( linear pair )

therefore, 105° + angle 3 = 180°

angle 3 = 180°- 105°

angle 3 = 75°

angle 1 = angle 3 = 75° ( vertically opposite angles )


hope it is helpful...