Answer:
∠ EPA = 10°
Explanation:
in a trapezoid
each lower base angle is supplementary to the upper base angle on the same side , then
∠ APT + ∠RAP = 180°
∠ APT + 147° = 180° ( subtract 147° from both sides )
∠ APT = 33°
then
∠ EPA + ∠ EPT = ∠ APT
∠ EPA + 23° = 33° ( subtract 23° from both sides )
∠ EPA = 10°