Respuesta :

sqdancefan

Answer:

  62°

Step-by-step explanation:

∠BOA is the supplement to the angle marked 56°, so is 124°. ∠BCA is an inscribed angle subtending the same arc (AB), so has half the measure of the arc.

m∠BCA = (1/2)(124°)

m∠BCA = 62°