If \[\cos 3\theta =\alpha \cos \theta +\beta {{\cos }^{3}}\theta ,\]then \[(\alpha ,\beta )=\]

If \[\cos 3\theta =\alpha \cos \theta +\beta {{\cos }^{3}}\theta ,\]th

1.	If \[\cos 3\theta =\alpha \cos \theta +\beta {{\cos }^{3}}\theta ,\]then \[(\alpha ,\beta )=\]
A.	\[(3,\,4)\]
B.	\[(4,\,3)\]
C.	\[(-3,\,4)\]
D.	\[(3,\,-4)\]
Answer» D. \[(3,\,-4)\]

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If \[\cos 3\theta =\alpha \cos \theta +\beta {{\cos }^{3}}\theta ,\]then \[(\alpha ,\beta )=\]

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