Respuesta :

WilzW

Answer:

30°

Step-by-step explanation:

∠AEB = 180° (straight line)

∠BEF = 60° (known)

∠CEF = 90° (right angle)

∠AEC = ?

∠AEB = ∠BEF + ∠CEF + ∠AEC

∠AEC = ∠AEB - ∠BEF - ∠CEF

∠AEC = 180°-60°-90° = 30°

I hope this helps, have a nice day! :)