Answer:
x = 29°
Step-by-step explanation:
Using angle sum property of triangle, we need to find ∠BCA.
In ΔBCA,
42° + 109° + ∠BCA = 180°
151 + ∠BCA = 180
∠BCA = 180 - 151
∠BCA = 29°
BC and DE are parallel lines and CF is transversal.
x = ∠BCA {Alternate interior angles are equal}
[tex]\sf \boxed{x = 29^\circ}[/tex]
