# The position vectors of the vertices of a triangle are i + 2j + 3k; 3i - 4j + 5k and -2i + 3j - 7k. Find the perimeter of the triangle

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The position vectors of the vertices of a triangle are i + 2j + 3k; 3i - 4j + 5k and -2i + 3j - 7k. Find the perimeter of the triangle

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Let A, B, C be the vertices of the triangle ABC,

Now