If 3 + cos 2 θ = 3(cot 2 θ + sin 2 θ), 0° < θ < 90°, then what is the value of (cos θ + 2sinθ)?

SSC CPO 11 Dec 2019 Shift 1 Paper

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If 3 + cos²θ = 3(cot²θ + sin²θ), 0° < θ < 90°, then what is the value of (cos θ + 2sinθ)?

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