A:10i - 2j -4k and B: i +7j - k. Determine |A-B|

asked Oct 12, 2022 39.6k views

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A - B = (10i - 2j - 4k) - (i + 7j - k)

A - B = 9i - 9j - 3k

|A - B| = √(9² + (-9)² + (-3)²) = √189 = 3√19

Mandar Shinde answered Oct 18, 2022

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