Помогите пожалуйста Упростите выражение: [tex] \frac{cos3a-cosa-sin2a}{sin3a-sina+cos2a} [/tex] - №19027390

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Упростите выражение:
[tex] \frac{cos3a-cosa-sin2a}{sin3a-sina+cos2a} [/tex]
- Предмет:
  Алгебра
- Автор:
  rudy79
- 6 лет назад

Ответы 1

(cos3a-cosa-sin2a)/(sin3a-sina+cos2a)==(-2sinasin2a-sin2a)/(2sinacos2a+cos2a)=-sin2a(2sina+1)/cos2a(2sina+1)==-tg2a
- Автор:
  dean463
- 6 лет назад
- 0
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