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Find a unit vector in the direction of ` vec a=2 hat i-3 hat j+6 hat k`

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Unit vector in the direction of given vector `veca` is,
`=veca/|veca|`
`= { 2hat i-3 hat j+6 hat k}/sqrt{2^2+(-3)^2+6^2}`
`={ 2hat i-3 hat j+6 hat k}/sqrt{39}`
`= 2/sqrt(39) hat i-3/sqrt39 hat j+6/sqrt39 hat k`
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RD SHARMA-ALGEBRA OF VECTORS-Solved Examples And Exercises
  1. Write a vector in the direction of vector 5 hat i- hat j+2 hat k which...

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  2. Writhe the direction cosines of the vector hat i+2 hat j+3 hat kdot

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  3. Find a unit vector in the direction of vec a=2 hat i-3 hat j+6 hat k

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  4. For what value of a the vectors 2 hat i-3 hat j+4 hat k\ a n d\ a hat ...

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  5. Writhe the direction cosines of the vectors -2 hat i+ hat j-5 hat kdot

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  6. Find the sum of the following vectors vec a= hat i-2 hat j ,\ vec b=...

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  7. Find a unit vector in the direction of the vector vec a=3 hat i-2 hat...

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  8. If vec a=x hat i+2 hat j-z hat k\ and vec b=3 hat i-y hat j+ hat k a...

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  9. Write a unit vector in the direction of the sum of the vectors vec a=...

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  10. Find the value of ' p ' for which the vectors 3 hat i+2 hat j+9 hat k\...

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  11. Find a vector vec a of magnitude 5sqrt(2) making an angle of pi/4 wit...

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  12. Write a unit vector in the direction of vec (PQ) where PQ are the poi...

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  13. Find a vector in the direction of vector 2 hat i-3 hat j+6 hat k which...

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  14. It | vec a|=4 and -3 le lambda le 2, then write the range of lambda |v...

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  15. In a triangle DeltaOAC, if B is the mid point of side AC and vec (O A...

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  16. If in a DeltaA B C ,\ A=(0,0),\ B=(3,3sqrt(3)), C-=(-3sqrt(3),3) then ...

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  17. If vec a ,\ vec b are the vectors forming consecutive sides of a reg...

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  18. Forces 3O vec A ,\ 5O vec B act along O A\ a n d\ O B If their resulta...

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  19. If vec a ,\ vec b ,\ vec c are three non-zero vectors, no two which...

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  20. If points A(60 hat i+3 hat j),\ B(40 hat i-8 hat j) and C(a hat i-52 h...

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