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Hi, this picture is not clear. Below is the solution based on my understanding -
I am assuming that <DAB = 130 degrees
If <ACB = 20, then m<abc = 110
if <ACB = 50, then m<abc = 80
based on the actual value of <acb, choose the option.
If you have any doubt, send me the clear picture, I will redo it.
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