Question

solve it fast please​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

angle BAC=angleBDC=60(BDC is the extension of BAC)

angle CBD=30

angle (CBD+CDB+DCB)=180

30+60+X=180

90+X=180

X=180-90

=90

angleDCB=angle ACD=90(DCB is the extension of ACB)