Question

solve this question step by step

Answer 1

this is your answer of your question

Answer 2

ACB=ABC = x
CAD= 165
BAC = 180-CAD. (exterior angle)
BAC = 15
ACB+ABC+BAC = 180. (angle sum property)
x+x+ 15 = 180
2x= 165
x= 165/2
ACB=ABC= 165/2