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in Mathematics by (54.8k points)

Solve: 2cos2x + 3sinx = 0

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Given: 2(1 – sin2x) + 3sinx = 0 

⇒ 2sin2x - 3sinx - 2 = 0 

⇒ (2sinx  + 1)(sinx - 2) = 0

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