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Digiron [165]
3 years ago
13

What is the measure of L ABD?

Mathematics
1 answer:
fenix001 [56]3 years ago
4 0

Answer:

\large\boxed{39^o}

Step-by-step explanation:

m\angle ABC=90^o\\\\m\angle ABC=m\angle ABD+m\angle DBC\\\\m\angle DBC=51^o\\\\\text{Substitute:}\\\\m\angle ABD+51^o=90^o\qquad\text{subtract }\ 51^o\ \text{from both sides}\\\\m\angle ABD=39^o

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