Q. 34.4( 204 Votes )

A tangent PQ at a

Answer :


We know that the line drawn from the centre of the circle to the tangent is perpendicular to the tangent.


By applying Pythagoras theorem in ΔOPQ,

OP2 + PQ2 = OQ2

52 + PQ2 =122

PQ2 =144 - 25

PQ = cm.

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