The vector \[\overset{\to }{\mathop{c}}\,\] directed along the bisectors of the angle between the vectors \[\overset{\to }{\mathop{a}}\,=7\hat{i}-4\hat{j}-4\hat{k},\] \[\overset{\to }{\mathop{b}}\,=-2\hat{i}-\hat{j}+2\hat{k},\] and \[|\overset{\to }{\mathop{c}}\,|=3\sqrt{6}\] is given by

The vector \[\overset{\to }{\mathop{c}}\,\] directed along the bisecto

1.	The vector \[\overset{\to }{\mathop{c}}\,\] directed along the bisectors of the angle between the vectors \[\overset{\to }{\mathop{a}}\,=7\hat{i}-4\hat{j}-4\hat{k},\] \[\overset{\to }{\mathop{b}}\,=-2\hat{i}-\hat{j}+2\hat{k},\] and \[\|\overset{\to }{\mathop{c}}\,\|=3\sqrt{6}\] is given by
A.	\[\hat{i}-7\hat{j}+2\hat{k}\]
B.	\[\hat{i}+7\hat{j}-2\hat{k}\]
C.	\[\hat{i}+7\hat{j}+2\hat{k}\]
D.	\[\hat{i}+7\hat{j}+3\hat{k}\]
Answer» B. \[\hat{i}+7\hat{j}-2\hat{k}\]

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The vector \[\overset{\to }{\mathop{c}}\,\] directed along the bisectors of the angle between the vectors \[\overset{\to }{\mathop{a}}\,=7\hat{i}-4\hat{j}-4\hat{k},\] \[\overset{\to }{\mathop{b}}\,=-2\hat{i}-\hat{j}+2\hat{k},\] and \[|\overset{\to }{\mathop{c}}\,|=3\sqrt{6}\] is given by

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