Excel in math, science, and engineering
Let \(D\) be the midpoint of \(BC\) of \(\Delta ABC\).
If the angle bisector of \(\angle ADC\) is tangent to the circumcircle of \(\Delta ABD\) at \(D\), find the value of \(\angle BAC\) in degrees.
\[\] Hint: Tangent of a circle.
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