If sin θ + sin 2 θ = 1, then what is the value of (cos 12 θ + 3cos 10 θ + 3cos 8 θ + cos 6 θ - 1)?

SSC CPO 2 July 2017 Shift 1 Paper

Question : 143 of 200

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If sin θ + sin ²θ = 1, then what is the value of (cos¹²θ + 3cos¹⁰θ + 3cos⁸θ + cos⁶θ - 1)?

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