Answer:
x=12
Step-by-step explanation:
overline AD = overline AB + overline BD
overline AD =10+10
overline AD =20
tan( angle BAC)= overline BC/overline AB
tan( angle BAC)= 6/10
angle BAC=30.964°
angle DAE= angle BAC
angle DAE=30.964°
tan( angle DAE)= overline DE/AD
tan (30.964 degrees) = x/20
x = 12
hope u understand
