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Math Help - Need some help with some Maths C revision

  1. #1
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    Need some help with some Maths C revision

    One of the questions say, In any given rectangular prism (dimensions a x b x c), there are 4 "space diagonals", lines that run from one vertex to the diagonally opposite vertex. Consider 2 of the space diagonals, OK and JC as shown in the diagram below. Find the relationship between a,b, and c such that the 2 space diagonals, OK and JC, are perpendicular to each other.

    Thanks for the help!! I need to get this question to ace my test!!!
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  2. #2
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    Re: Need some help with some Maths C revision

    Label the sides of the rectangular prism and write the coordinates of the vertices. Find the slopes of the diagonals OK and JC. Their dot product should be zero.
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