Mathematics, 24.10.2020 18:00 jennybee12331

Cos² y– sin²y=1–2sin² y

simplify pls, urgent

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Cos² y– sin²y=1–2sin² y

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Cos² y– sin²y=1–2sin² ysimplify pls, urgent

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Cos² y– sin²y=1–2sin² y

simplify pls, urgent