please answer this question
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Answer:
ABC = 80 ; BCA = 60 ; CAB = 40
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The pic is a bit cropped but I think I got your point.
BCA = 180 - ACE = 180 - 120 = 60
ABC = 180 - ABD = 180 - 100 = 80
CAB = 180 - (BCA + ABC) = 180 - ( 60 + 80) = 180 - 140 = 40
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