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Find the acute angle θ such that 2cos2θ = 3sinθ - Shaalaa.com

2cos 2 θ = 3sinθ. ∴ 2(1 – sin 2 θ) = 3sinθ. ∴ 2 – 2sin 2 θ = 3sinθ. ∴ 2sinθ + 3sinθ – 2 = 0. ∴ 2sin 2 θ + 4sinθ – sinθ – 2 = 0.

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