Multiple Choice Questions on In a triangle ABC ang C 90 deg and CD is the perpendicular from C to AB If CD minus 2 BC minus 2 CA ........... for CDS Exam Preparation

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Multiple Choice Questions

In a triangle ABC ang C 90 deg and CD is the perpendicular from C to AB If CD minus 2 BC minus 2 CA ...........

Quantitative Aptitude (CDS) Coordinate Geometry
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    In a triangle ABC, ∠C = 90° and CD is the perpendicular from C to AB. If (CD)−2=(BC)−2+(CA)−2, then which one of the following is correct?

    BC.CD = AB.CA

    Incorrect Answer

    AB.BC = CD.CA

    Incorrect Answer

    CA2+CB2=2(AD2+CD2)

    Incorrect Answer

    AB.CD = BC.CA

    Correct Answer
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