If α, β are the roots of an equation x2 - 2x cos θ + 1 = 0 then t – McqOptions

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1.	If α, β are the roots of an equation x2 - 2x cos θ + 1 = 0 then the equation having αn and βn is ?
A.	x2 - (2cos nθ )x + 1 = 0
B.	2x2 - (2 cos nθ) x - 1 = 0
C.	x2 + (2 cos nθ) x + 1 = 0
D.	x2 + (2 cos nθ) x - 1 = 0
Answer» B. 2x2 - (2 cos nθ) x - 1 = 0

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