Cos³x
Sen²x +Cos²x=1
Cos²x=1-Sen²x
Reemplazamos:
B=(1-Sen²x) cosx
B=Cos²x.Cosx
B=Cos³x
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Verified answer
Respuesta:
Cos³x
Sen²x +Cos²x=1
Cos²x=1-Sen²x
Reemplazamos:
B=(1-Sen²x) cosx
B=Cos²x.Cosx
B=Cos³x