# Question - Direction Cosines and Direction Ratios of a Line

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#### Question

Direction cosines of the line passing through the points A (- 4, 2, 3) and B (1, 3, -2) are.........

(a) +-1/sqrt51,+-5/sqrt51,+-1/sqrt51

(b) +-5/sqrt51,+-5/sqrt51,+-5/sqrt51

(c) +-sqrt5,+-1,+-5

(d) +-sqrt51,+-sqrt51+-sqrt51

#### Solution

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