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The direction cosines of the vector, 3i-...

The direction cosines of the vector, 3i-4j+5k are

A

`3/(sqrt2), (-4)/(sqrt2), 1/sqrt2`

B

3/5,-4/5,1/5

C

`3/(5sqrt2), (-4)/(5sqrt2), 1/sqrt2`

D

`3/(5sqrt2), 4/(5sqrt2), 1/sqrt2`

Text Solution

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The correct Answer is:
C
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HIMALAYA PUBLICATION-VECTORS AND THEIR APPLICATIONS-QUESTION BANK
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