Question

find the value of x​

Answer 1

Answer:

x=120

Step-by-step explanation:

In ∆ABC angle ECD is an exterior angle

therefore, angle ECD=Sum of two interior opposite angle

angle ECD=Angle BAC+angle ABC

angle ECD=30°+40°

angle ECD=70°

In ∆ECD angle AED is an exterior angle

therefore, angle AED=Sum of two interior opposite angle

angle AED=Angle ECD+angle CDE

angle AED=70°+50°

angle AED=120°

x=120°