A) \[(3,\,4)\]
B) \[(4,\,3)\]
C) \[(-3,\,4)\]
D) \[(3,\,-4)\]
Correct Answer: C
Solution :
Given that \[\cos 3\theta =\alpha \cos \theta +\beta {{\cos }^{3}}\theta \] But \[\cos 3\theta =4{{\cos }^{3}}\theta -3\cos \theta \] Þ \[(\alpha ,\beta )=(-3,\,4)\].You need to login to perform this action.
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