Question

tell the answer kindly

Answer 1

angle EOF=angle COD (vertically opposite angles)
Angles above line AB->
$2y + 5y + 5y = 180degree \\ 12y = 180$
y=9°

Answer 2

angle cod congruent to angle dog(vertically opposite angle).
angle(cod+cob+DOA) equals to 180 degree
12y equals 180
y equals 15