(1 + cos Ф) (1 - cos Ф)= sen²Ф.... Question from @DanielaRubio2305

September 2019 1 12 Report

(1 + cos Ф) (1 - cos Ф)= sen²Ф

Rimski

Respuesta:

1 = 1 CORRECTO

Explicación paso a paso:

Daniela,

Efectuamos el producto notable: suma por diferencia

1 - cos^2Ф = sen^2Ф

1 = sen^2Ф + cos^2Ф = 1 IDENTIDAD TRIGONOMÉTRICA

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