Автор - alim4ik01reg

sin a cos b - sin (a -b) упростить

Ответ

Проверено экспертом

Автор - Misha001192
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Применим формулу синуса разности:

 sin(a - b)  =  sin(a)  cos(b)  -  cos(a)  sin(b)  \

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 sin(a)  cos(b)  -  sin(a - b)  =  sin(a)  cos(b)  -  sin(a)  cos(b)  +  cos(a)  sin(b)  =  \  =  cos(a)  sin(b)  \

ОТВЕТ: cosa•sinb

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