If \[\cos \alpha +\cos \beta +\cos \gamma =\sin \alpha +\sin \beta +\s – McqOptions

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1.	If \[\cos \alpha +\cos \beta +\cos \gamma =\sin \alpha +\sin \beta +\sin \gamma =0\] then \[\cos 3\alpha +\cos 3\beta +\cos 3\gamma \] equals to [Karnataka CET 2000]
A.	0
B.	\[\cos (\alpha +\beta +\gamma )\]
C.	\[3\cos (\alpha +\beta +\gamma )\]
D.	\[3\sin (\alpha +\beta +\gamma )\]
Answer» D. \[3\sin (\alpha +\beta +\gamma )\]

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