Respuesta :

abhaysilver1

Here is your answer

m/_3= 78

REASON

Given

m/_1= 78

AC and BD are diameters.

so, 1 and 3 are pair of vertically opposite angles.

Hence, m/_1=m/_3

m/_3= 78

HOPE IT IS USEFUL

kirsten6231680
Definitely is 78 ! That’s what I think!