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16. Prove that "The lengths of the two tangents from an external point toa circle are equal."pls answer fast!!!

Answer»

ANSWER:

data:'o' is the CENTER of a circle

'P' is the external point

PQ & PR are the two tangents

prove:PQ =PR

construction : join OP,OQ,OR

proof: in triangle OQP &OPR

OQ = OR (radius)

OP = OP (common)

angle Q = angle R =90*

THEREFORE triangle OQP congruent to triangle ORP( RHS POSTULATE)

therefore PQ = PR (C P C T )



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