упростить триганометрическое выражение cosa- 2 sin3a-cos5a дробь sin5a - 2 cos 3a -sina - №24941317

упростить триганометрическое выражение cosa- 2 sin3a-cos5a дробь sin5a - 2 cos 3a -sina
- Предмет:
  Алгебра
- Автор:
  ivan923
- 6 лет назад

Ответы 1

((cosa-cos5a)-2sina)/((sin5a-sin3a)-2cos3a)==(2sin3asin2a-sin3a)/(2sin2acos3a-2cos3a)==2sin3a(sin2a-1)/2cos3a(sin2a-1)=tg3a
- Автор:
  heiditpua
- 6 лет назад
- 0
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