Respuesta :

Answer:

  • m∠EBC =  65°15'
  • AC = 20 in

Step-by-step explanation:

ΔABC is isosceles. Since BE ⊥ AC, it is the bisector of ∠ABC. Then ...

  m∠EBC = (1/2)·m∠ABC = (1/2)·130°30'

  m∠EBC = 65°15'

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BE is not only the bisector of ∠ABC, it is also the median from vertex B. That  is ...

  AC = 2·AE  = 2·10 in

  AC = 20 in