Помогите с тригонометрией. Упростите выражение. Выражение во вложении

Помогите с тригонометрией. Упростите выражение. Выражение во вложении
- Предмет:
  Алгебра
- Автор:
  gingerwalton
- 6 лет назад

Ответы 2

По формуле синус*
- Автор:
  tinymlnm
- 6 лет назад
- 0
sin2.5α cos1.5β+sin1.5β cos2.5α= sin (2.5+1.5)= sin4α (По формуле смнус суммы) cos(4П-α)= cosα (Т.к 4П, то название не изменяется, 4П-α Мы перейдём в 4 четверть, где у cos знак "+") Следовательно, sin2.5α cos1.5β+sin1.5β cos2.5α+cos(4П-α)= sin4α + cosα
- Автор:
  andreaapij
- 6 лет назад
- 0
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помогите , пожалуйста ) очень срочно!
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5. When I called at his house, they (to tell) me that he (to leave) an hour before. 6. When I came to the station, I (not to find) my friend there as I (to be) five minutes late and the train (to leave). 7. He (to want) to visit the place where he (to live) in his childhood.
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Помогите с тригонометрией. Упростите выражение. Выражение во вложении

Ответы 2

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