спростіть вираз: 1-sin^2a-cos^2a - №26451287

спростіть вираз: 1-sin^2a-cos^2a
- Предмет:
  Математика
- Автор:
  nathanielw5gz
- 5 лет назад

Ответы 1

Основное тригонометрическое тождество: sin²α + cos²α = 1.1 -sin²α - cos²α = 1 - (sin²α + cos²α) = 1 - 1 = 0
- Автор:
  cuddle pig
- 5 лет назад
- 0
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