8th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-3

  • question_answer
    In a right angled triangle with sides a and b, hypotenuse c, the altitude drawn on the hypotenuse is \[x\].Then:

    A)  \[ab={{x}^{2}}\]                   

    B)  \[\frac{1}{a}+\frac{1}{b}=\frac{1}{x}\]

    C)         \[{{a}^{2}}+{{b}^{2}}=2{{x}^{3}}\]       

    D)  \[\frac{1}{{{a}^{2}}}+\frac{1}{{{b}^{2}}}=\frac{1}{{{x}^{2}}}\]

    E)  None of these

    Correct Answer: D


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