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prove that sin^2@+cos^2@ =1

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prove that sin^2@+cos^2@ =1

    • Posted by Vishvajit Yadav 5 years, 4 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Vishvajit Yadav 5 years, 4 months ago

    solution= from LHS = sin^2@+cos^2@ = (p/h)^2+(b/h)^2 = (p/h×p/h)+(b/h×b/h) = p^2/h^2+b^2/h^2 = p^2+b^2/h^2 = h^2/h^ =1 RHS prove

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