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