Question

plz ans this question step by step
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Answer 1

Answer:

Step-by-step explanation:

angle adb = angle cbd ( alternate angles )

angle acd = angle cab ( alternate angles )

angle acd = 60 degree

Answer 2

Answer:

<DBC=<DAC=60 (ANGLES FROM SAME ARC)

<DAB=40+60=100°

THEN ,

<DAB+<BCD=180°(SUM OF OPPOSITE ANGLES OF CYCLIC QUAD. IS 180)

SO <BCD=80°

SINCE, AB=BC,

<BAC=<BCA=40

<BCD=<ACD+<BCA

80°=<ACD+40°

SO,<ACD=40°

HERES YOUR ANSWER..