Explicación paso a paso:
Hola!!
[tex] \sin6x - \sin2x \\ \\ 2 \ \cos( \frac{6x + 2x}{2} ) \times \ \sin ( \frac{6x - 2x}{2} ) = \\ \\ 2 \ \cos 4x. \ \sin2x[/tex]
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Explicación paso a paso:
Hola!!
[tex] \sin6x - \sin2x \\ \\ 2 \ \cos( \frac{6x + 2x}{2} ) \times \ \sin ( \frac{6x - 2x}{2} ) = \\ \\ 2 \ \cos 4x. \ \sin2x[/tex]