Mathematics
Mathematics, 10.12.2019 19:31, ej02duncan1

If the position vectors of two points a and b are 3i + 2j - 7k and 2i - 5j + 4k respectively, then find ab and its direction cosines

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If the position vectors of two points a and b are 3i + 2j - 7k and 2i - 5j + 4k respectively, then f...

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