If the position vectors of the points A, B, C, D be \[\mathbf{i}+\mathbf{j}+\mathbf{k},\,\,2\,\mathbf{i}+5\,\mathbf{j},\,\,3\,\mathbf{i}+2\,\mathbf{j}-3\mathbf{k}\]and \[\mathbf{i}-6\,\mathbf{j}-\mathbf{k},\] then the angle between the vectors \[\overrightarrow{AB}\] and \[\overrightarrow{CD}\] is

If the position vectors of the points A, B, C, D be \[\mathbf{i}+\math

1.	If the position vectors of the points A, B, C, D be \[\mathbf{i}+\mathbf{j}+\mathbf{k},\,\,2\,\mathbf{i}+5\,\mathbf{j},\,\,3\,\mathbf{i}+2\,\mathbf{j}-3\mathbf{k}\]and \[\mathbf{i}-6\,\mathbf{j}-\mathbf{k},\] then the angle between the vectors \[\overrightarrow{AB}\] and \[\overrightarrow{CD}\] is
A.	\[\frac{\pi }{4}\]
B.	\[\frac{\pi }{3}\]
C.	\[\frac{\pi }{2}\]
D.	\[\pi \]
Answer» E.

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If the position vectors of the points A, B, C, D be \[\mathbf{i}+\mathbf{j}+\mathbf{k},\,\,2\,\mathbf{i}+5\,\mathbf{j},\,\,3\,\mathbf{i}+2\,\mathbf{j}-3\mathbf{k}\]and \[\mathbf{i}-6\,\mathbf{j}-\mathbf{k},\] then the angle between the vectors \[\overrightarrow{AB}\] and \[\overrightarrow{CD}\] is

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