If ABCDEF is regular hexagon, the length of whose side is a, then \[\overrightarrow{AB}\,\,.\,\overrightarrow{AF}+\frac{1}{2}\,{{\overrightarrow{BC}}^{2}}=\]

If ABCDEF is regular hexagon, the length of whose side is a, then \[\o

1.	If ABCDEF is regular hexagon, the length of whose side is a, then \[\overrightarrow{AB}\,\,.\,\overrightarrow{AF}+\frac{1}{2}\,{{\overrightarrow{BC}}^{2}}=\]
A.	a
B.	\[{{a}^{2}}\]
C.	\[2\,{{a}^{2}}\]
D.	0
Answer» E.

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If ABCDEF is regular hexagon, the length of whose side is a, then \[\overrightarrow{AB}\,\,.\,\overrightarrow{AF}+\frac{1}{2}\,{{\overrightarrow{BC}}^{2}}=\]

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