Найдите значение выражения 12/sin^2(173) + sin^2(263). Оба синуса в знаменателе дроби. - №15586243

Найдите значение выражения 12/sin^2(173) + sin^2(263).
Оба синуса в знаменателе дроби.
- Предмет:
  Математика
- Автор:
  moshemacdonald
- 6 лет назад

Ответы 1

знаменатель = = Sin²173° + Sin²263° = Sin²(180° -7°) + Sin²(270° -7°)==Sin²7° + Cos²7° = 1Ответ: 12
- Автор:
  georgetzia
- 6 лет назад
- 0
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