In a circle, AB is a chord. If ∠ACB = 50°, find ∠ADB.
50°
In the given figure, points C and D lie on the same arc of the circle, on the same side of chord AB.
Angles subtended by the same chord at points lying in the same segment of a circle are equal, so \(\angle ADB = \angle ACB\).
Since \(\angle ACB = 50^\circ\), it follows that \(\angle ADB = 50^\circ\).
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