Предмет: Алгебра, автор: daryakorchikova31

Найдите значение выражения:
5sin (a+ 2pi) + 11cos (-pi/2+a), если sin a = 0,8

Ответы

Автор ответа: Cadet1
3

Ответ:

-4,8

Объяснение:

Упростим, 5sina-11sina=-6sina=-6*0,8=-4,8

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