Find the direction cosines of the vector ` hat i+2 hat j+3 hat k`. – InterviewSolution

1.	Find the direction cosines of the vector ` hat i+2 hat j+3 hat k`.
Answer» Correct Answer - `(1)/(sqrt(14)), (2)/(sqrt(14)),(3)/(sqrt(14))` Direction ratios of `vec(a)` are 1,2,3. And, `sqrt(1^(2)+2^(2)+3^(2))=sqrt(14)`. `:.` direction cosines of `vec(a)` are `(1)/(sqrt(14)),(2)/(sqrt(14)),(3)/(sqrt(14))`.

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