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Two sides of a parallelogram are vectors 3i + 4j - 5k and -2j + 7k. Find the unit vectors parallel to the diagonals.

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Two sides of a parallelogram are vectors 3i + 4j - 5k and -2j + 7k. Find the unit vectors parallel to the diagonals.

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Let ABCD be a parallelogram with

Hence, the unit vectors parallel to the diagonals are

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