Respuesta :

The angle AE is given by:
 AE = 180-93 = 87
 Then, the angle BA is given by the following equation:
 87 + 38 + BA = 180
 Clearing BA we have:
 BA = 180-87-38
 BA = 55 degrees
 Answer:
 
The measure of the arc AB is given by:
 
BA = 55 degrees