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The projections of a vector on the three coordinate axis are {

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The projections of a vector on the three coordinate axis are $6, 3, 2$ respectively. The direction cosines of the vector are(A) $6, - 3, 2$ (B) $\frac{6}{5}, \frac{- 3}{5}, \frac{2}{5}$ (C) $\frac{6}{7}, \frac{- 3}{7}, \frac{2}{7}$ (D) $\frac{- 6}{7}, \frac{- 3}{7}, \frac{2}{7}$

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Samuel Discussed

The projections of a vector on the three coordinate axis are

6, 3, 2

respectively. The direction cosines of the vector are(A)

6, - 3, 2

(B)

\frac{6}{5}, \frac{- 3}{5}, \frac{2}{5}

(C)

\frac{6}{7}, \frac{- 3}{7}, \frac{2}{7}

(D)

\frac{- 6}{7}, \frac{- 3}{7}, \frac{2}{7}

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Question Text	The projections of a vector on the three coordinate axis are $6, 3, 2$ respectively. The direction cosines of the vector are(A) $6, - 3, 2$ (B) $\frac{6}{5}, \frac{- 3}{5}, \frac{2}{5}$ (C) $\frac{6}{7}, \frac{- 3}{7}, \frac{2}{7}$ (D) $\frac{- 6}{7}, \frac{- 3}{7}, \frac{2}{7}$
Answer Type	Video solution: 1
Upvotes	152