From 12 o'clock position the minute hand moves   6 degrees per minute     6 * 50 = 300 degrees
   the hour hand only moves 360 degrees / 720 min  =   1/2 degree per min   
                      2 hrs 50 min = 170 min             170 min * 1/2 degree/min = 85 degrees 
  
 so from the minute hand CLOCKWISE to the hour hand   is     60 + 85 = 145 degrees