2022 BTYSS P1 Q8

2022 BTYSS P1 Q8

Secondary 4

5 marks

Solve the equation \(5\cos2x+3\sin x=4\) for \(0^\circ<x<360^\circ\).[5]

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Answer:\(x=30^\circ,150^\circ,191.5^\circ,348.5^\circ\)

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