Question

find this angle I don't know plzz help me

Answer 1

hey there!
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the angle BAC=80 DEGREE
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Answer 2

As BD = DC then Angle DBC=Ang.DCB (angle opposite to the equal sides are equal)
Now In Triangle BDC through angle sum prop.
angle BDC= 100°
As ABCD is a cyclic quadrilateral Hence,
Sum of opposite angle will be 180°
Hence angle BDC+ angle BAC=180°
Therefore angle BAC = 80°
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