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in the given figure PA and …

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in the given figure PA and PB are twoo tangents from an external point P to a circle with centre O. LN touuches thhe circle at M prove that PL +LM = PN + MN

    • Posted by Lalita Mangla 6 years, 6 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Sia ? 6 years, 6 months ago


    Since tangents drawn from an external point to a circle are equal.
    {tex}\therefore{/tex} AL = LM
    BN = MN
    And, PA = PB
    Now,
    PA = PB
    {tex}\Rightarrow{/tex} PL + LA = PN + NB
    {tex}\Rightarrow{/tex} PL + LM = PN + MN
    Hence, proved.

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