In the given figure, AC is a diameter of a circle, whose centre is O. A circle is described on AO as diameter. AE, a chord of the larger circle, intersects the smaller circle at B. prove that:AB=BE.
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Solution
Firstly, join OB. Then, ∠OBA=90∘ [Angle in a semi-circle is a right angle] That is, OB is perpendicular to AE. Now, we know that the perpendicular draw from the centre to a chord bisects the chord. Therefore, AB=BE