Prove that the tangents drawn from an external point to a circle are o – InterviewSolution

1.

Prove that the tangents drawn from an external point to a circle are of equallength

Answer»

To provePT=QT

Proof: Consider the triangleOPTandOQT

OP=OQ

∠OPT=∠OQT=90°

OT=OT(common side)

Hence by RHS the triangles are equal.

HencePT=QT

Hence Proved.

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