Math, asked by riyanak764795, 11 months ago

answer it... its urgent

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Answered by Joice2004

1

DBC = C (isosceles property)

dbc = 42

dba = 180 - dbc (linear pair)

dba = 180-42= 138

bda = bad

therefore 2bda + dba = 180

2bda = 180-138

bda = 42/2= 21

bda =bad = 21

bad + dca = x (exterior angle property)

42 + 21 = x

x = 63

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