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Mathematics, 14.11.2020 18:20 dontcareanyonemo

Rewrite with only sin x and cos x. cos 2x + sin x

1 + 3 sin x
1 + 3 sin2x
1 - 2 sin2x + sin x
1 + 2 sin2x + sin x

Please explain

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Rewrite with only sin x and cos x. cos 2x + sin x

1 + 3 sin x
1 + 3 sin2x
1...
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