Find the value of each variable.
y
105°
86°
z
106°/2°

or, z + 106° = 180° ( being straight angle )

or, z = 180°- 106°

•°• z = 74°

Now,

or, z + y = 180° ( being co-interior angle )

or, 74° + y = 180°

or, y = 180° - 74°

•°• y = 106°

~nightmare 5474~