how to prove that tangents from an external point to circle are equal?
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Prove that the lenghts of tangentsdrawn from an external point to acircle are equal. Answer: Given: Acircle with centre O; PA and PB are twotangents to the circle drawn from anexternal point P. It is known that atangent at any point of a circle is perpendicular to the radius through thepoint of contact.
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