if cos 3theta = acos theta + b cos^1/3 theta, then (a,b)=?
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Cos 3θ = a Cos θ + b Cos³ θ
As we know ,
Cos 3θ = 4 Cos ³ θ - 3 Cos θ
By Comparing,
b = 4 and a= - 3
As we know ,
Cos 3θ = 4 Cos ³ θ - 3 Cos θ
By Comparing,
b = 4 and a= - 3
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