Предмет: Математика, автор: FurnoNeitr

Спростіть вираз 1-sin^2a+cos^2a A) 2cos^2a B)-2sin^2a C)2 D)1​

Ответы

Автор ответа: Khodanovich1979
0

Відповідь:

Покрокове пояснення:

1-sin^{2}a=cos^{2} a\\ cos^{2} a+cos^{2} a=2cos^{2} a

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