If \[\theta \] be the angle between the vectors \[12+m-2=0\] and \[\mathbf{b}=6\mathbf{i}-3\mathbf{j}+2\mathbf{k}\], then [MP PET 2001, 03]

If \[\theta \] be the angle between the vectors \[12+m-2=0\] and \[\ma

1.	If \[\theta \] be the angle between the vectors \[12+m-2=0\] and \[\mathbf{b}=6\mathbf{i}-3\mathbf{j}+2\mathbf{k}\], then [MP PET 2001, 03]
A.	\[\cos \theta =\frac{4}{21}\]
B.	\[\cos \theta =\frac{3}{19}\]
C.	\[\cos \theta =\frac{2}{19}\]
D.	\[\cos \theta =\frac{5}{21}\]
Answer» B. \[\cos \theta =\frac{3}{19}\]

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If \[\theta \] be the angle between the vectors \[12+m-2=0\] and \[\mathbf{b}=6\mathbf{i}-3\mathbf{j}+2\mathbf{k}\], then [MP PET 2001, 03]

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