Find the direction cosines of the sides of the triangle whose vertices arc (3, 5, -4), (-1, 1, 2) and (-5, -5, -2)

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Q 1824191051.     Find the direction cosines of the sides of the
triangle whose vertices arc (3, 5, -4), (-1, 1, 2)
and (-5, -5, -2).

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(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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