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Question

Prove that the line segment joining the points of contact of two parallel tangent of a circle, passes through its centre.

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Solution

REF.Image.
We have to prove the line segment joining the point of
contact of two parallel tangents of a circle passes
through its centre.

consider AB & CD are two tangents of circle

consider P & Q are a point of the intersection of tangents at circle and POQ is a line segment.

O is the centre of the circle

OQCD;OPAB

ABCD;OPOQ. OP & OQ passes through O

Hence POQ is a line passes through the centre of the circle

1369560_1229422_ans_ab03f576d2f74eaebc13a4b6df65931e.JPG

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