Buktikanlah identitas trigonometri berikut:

Saluranedukasion 2023-11-24T13:12:00.000Z

Buktikanlah identitas trigonometri berikut: (cosx+sinx)(cosx-sinx)=1-2sin^2x
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Buktikanlah identitas trigonometri berikut: (cosx+sinx)(cosx-sinx)=1-2sin^2x