what is the unit vector parellel to A=3i+4j-2k , what vector should be added to A so that the resultant is the unit vector i ????
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Answered by
2
let the vector parallel to A be m(3i+4j-2k)
since resultant vector of their sum is 3(1+m)i+4(1+m)j+-2(1+m)k
it's resultant =1
(9(1+m)^2)+16(1+m)^2+4(1+m)^2=1^2
solve for m
since resultant vector of their sum is 3(1+m)i+4(1+m)j+-2(1+m)k
it's resultant =1
(9(1+m)^2)+16(1+m)^2+4(1+m)^2=1^2
solve for m
Answered by
3
-2i-4j+2k should be added to get A
Anomi:
And unit vector parallel to A is just A/|A|
Because in one dirⁿ there is only one unit vectoe
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