Предмет: Математика, автор: yammy14

Определите знак произведения

а) sin67° × cos267° × cos375° × (-sin68°) × cos (-68°) × sin2°
б) sin210° × sin465° × cos665° × cos540°​

Ответы

Автор ответа: afintop4ik
0

Ответ:

Определите знак произведения а) sin67° × cos267° × cos375° × (-sin68°) × cos (-68°) × sin2° б) sin210° × sin465° × cos665° × cos540°​

Пошаговое объяснение:

yammy14: ??
afintop4ik: что?
afintop4ik: А) знак «-»
Б) знак «+»
В) знак «-»
Г) знак «-»
Д) выражение равно 0
Е) знак «+»
afintop4ik: вот
alikovamalika64: определите знак произведения синус sin 67°cos267°cos375°(-sin68°)cos(-68°)sin2°
alikovamalika64: please
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