Question

find the value of unknown sides​

Answer 1

Step-by-step explanation:

Let angle ABC be y

angle ACB =angle ABC =y

angle ABC+angle ACB=180°-55°

2y=125°

y=62.5°

Let angle DBC be a

angle DBC=angle DCB =a

angle DBC+angle DCB=135°

2a=135°

a=67.5°

angle ABD =angle ABC+angle DBC

x=67.5°+62.5°

x=130°