If O is the orthocentre of the \[\Delta \,ABC\], then

1.	If O is the orthocentre of the \[\Delta \,ABC\], then
A.	\[\angle \,BOC=2\,\,\angle \,BAC\]
B.	\[\angle \,BOC\,\,and\,\,\angle \,BAC\] are supplementary
C.	\[\angle \,BOC\,=\,\angle \,BAC\]
D.	None of these
Answer» C. \[\angle \,BOC\,=\,\angle \,BAC\]

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If O is the orthocentre of the \[\Delta \,ABC\], then

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