Answer:
∠ c = 29°
Step-by-step explanation:
∠ b and 97° are vertically opposite angles and are congruent , so
∠ b = 97°
the 3 angles in the triangle sum to 180° , that is
54° + b + c = 180°
54° + 97° + c = 180°
151° + c = 180° ( subtract 151° from both sides )
c = 29°
