It is 114-62=52 degrees.
The two straight lines are parallel. They are cut by a third line. The angle that is marked as 114 degrees has the same measure as angle TRN. (So, angle TRN is also 114 degrees). Angle TRN made of angle 3, and another angle that is marked as 62 degrees. So, (62 + angle3) = 114. So angle 3 is 114-62
