Respuesta :

Answer:

x = 19°

Step-by-step explanation:

m∠DBA = m∠CBE = 71 because they are vertical angles

∠A and ∠DBA are complementary angles because the acute angles of a right triangle are complementary

So, m∠A + m∠DBA = 90

          x + 71 = 90

                  x = 19°

Otras preguntas