Q .     The magnitude of the projection of the vector `veca=4hati-3hatj+2hatk` on the line which makes equal angles with the coordinate axes:

EAMCET 2011
A

`sqrt2`

B

`sqrt3`

C

`1/sqrt3`

D

`1/sqrt2`

HINT

,the require line which makes equal angle with the coordinate axes is `v=+-1/sqrt3hati+-1/sqrt3hatj+-1/sqrt3hatk` Now the magnitude of the projection of the vector `veca=4veci-3vecj+2veck` on line `v` :. Projection of a along `v =(a*v)/|v|`

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