\[\cos \,\,2\theta +2\,\,\cos \theta \] is always – McqOptions

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1.	\[\cos \,\,2\theta +2\,\,\cos \theta \] is always
A.	Greater than \[-\frac{3}{2}\]
B.	Less than or equal to \[\frac{3}{2}\]
C.	Greater than or equal to \[-\frac{3}{2}\] and less than or equal to 3
D.	None of these
Answer» D. None of these

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