
Công Thức Toán Học
Flashcard
•
Mathematics
•
11th Grade
•
Practice Problem
•
Hard
Phúc Hồng
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7 questions
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1.
FLASHCARD QUESTION
Front
Công thức sin nhân đôi
Back
sin(2a) = 2sin(a)cos(a)
2.
FLASHCARD QUESTION
Front
Công thức cos nhân đôi (Dạng cơ bản)
Back
cos(2a) = cos²(a) - sin²(a)
3.
FLASHCARD QUESTION
Front
Công thức cos nhân đôi (Chỉ chứa cos)
Back
cos(2a) = 2cos²(a) - 1
4.
FLASHCARD QUESTION
Front
Công thức cos nhân đôi (Chỉ chứa sin)
Back
cos 2a = 1 − 2sin² a
5.
FLASHCARD QUESTION
Front
Công thức tang nhân đôi
Back
tan(2a) = \frac{1 - tan^2(a)}{2tan(a)} (với tan(a) và tan(2a) xác định)
6.
FLASHCARD QUESTION
Front
Công thức hạ bậc của sin2a
Back
sin2a = 2sin(a)cos(a) (Được suy ra từ cos2a = 1 - 2sin2a)
7.
FLASHCARD QUESTION
Front
Công thức hạ bậc của cos2a
Back
cos2a = 2cos²a - 1 (Được suy ra từ cos2a = 2cos²a - 1)
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