Let ‘S’ be the set of all α ∈ R such that the equation cos 2x + – McqOptions

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1.	Let ‘S’ be the set of all α ∈ R such that the equation cos 2x + α sin x = 2α – 7 has a solution. Then S is equal to:
A.	R
B.	[1, 4]
C.	[3, 7]
D.	[2, 6]
Answer» E.

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