[" If the vector "8i" + âj of magnitude ...

[" If the vector "8i" + âj of magnitude "10" is in the "],[" direction of the vector "4hat i-3hat j," then the value of "],[" a is equal to "],[[" (A) "6," [Kerala (Engg.) "2011]],[" (C) "-3," (B) "3],[" (C) "-6]]

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