Ответ:
Б
[tex] \sin(5 \alpha ) \times \cos( \alpha ) - \cos(5 \alpha ) \times \sin( \alpha ) = \sin(5 \alpha - \alpha ) = \sin( 4 \alpha ) [/tex]
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Ответ б
Ответ:
Б
[tex] \sin(5 \alpha ) \times \cos( \alpha ) - \cos(5 \alpha ) \times \sin( \alpha ) = \sin(5 \alpha - \alpha ) = \sin( 4 \alpha ) [/tex]