Question

prove that the tangents to a circle at the end points of a diameter are parallel​

Answer 1

Answer:

Let AB be a diameter of the circle. Two tangents PQ and RS are drawn at points A and B respectively. Radius drawn to these tangents will be perpendicular to the tangents. Since alternate interior angles are equal, lines PQ and RS will be parallel.

Answer 2

Answer:

RTP : that the tangents to a circle at the end points of a diameter are parallel

PROOF: OA=OB (radius)

PA=PB

HENCE PROVE D

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