The unit vector parallel to the resultant of the vectors A = 4ỉ +39+6k and B =-1 +39 - 8k is :- (1) 3(3î +6j 2k) (2) 5(3+oſ + 2k) (3) (3+69+2) (4) 20 (3î + 69 -2K)

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sesuetant vector = [ begin{aligned} vec{r} &=vec{A}+vec{B} &=3 hat{imath}+6 hat{jmath}-2 hat{k} end{aligned} ] Panallel vectors must cunit vectol in ( hat{gamma} ) 1) Ang

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