
Тригонометрические тождества и формулы
Flashcard
•
Mathematics
•
10th Grade
•
Practice Problem
•
Hard
Айгерим Исмаилова
Used 1+ times
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15 questions
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1.
FLASHCARD QUESTION
Front
Основное тригонометрическое тождество: sin²α + cos²α = 1
Back
Сумма квадратов синуса и косинуса любого угла равна единице.
2.
FLASHCARD QUESTION
Front
tgα = sinα / cosα ctgα = cosα / sinα
Back
Формулы для тангенса и котангенса угла через синус и косинус.
3.
FLASHCARD QUESTION
Front
1 / cos²α = tg²α + 1 1 / sin²α = ctg²α + 1
Back
Формулы связи тангенса и котангенса с обратными тригонометрическими функциями.
4.
FLASHCARD QUESTION
Front
Четность и нечетность функций: sin(-α) = -sinα cos(-α) = cosα tg(-α) = -tgα ctg(-α) = -ctgα
Back
Свойства четности и нечетности тригонометрических функций.
5.
FLASHCARD QUESTION
Front
Формулы сложения: sin(α + β) = sinα·cosβ + cosα·sinβ cos(α + β) = cosα·cosβ - sinα·sinβ
Back
Формулы для синуса и косинуса суммы двух углов.
6.
FLASHCARD QUESTION
Front
Формулы вычитания: sin(α - β) = sinα·cosβ - cosα·sinβ cos(α - β) = cosα·cosβ + sinα·sinβ
Back
Формулы для синуса и косинуса разности двух углов.
7.
FLASHCARD QUESTION
Front
tg(α + β) = (tgα + tgβ) / (1 - tgα·tgβ) tg(α - β) = (tgα - tgβ) / (1 + tgα·tgβ)
Back
Формулы для тангенса суммы и разности двух углов.
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