PCH-2.6 Double Angle Formulas
Flashcard
•
Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Hard
Wayground Content
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10 questions
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1.
FLASHCARD QUESTION
Front
What is the double angle formula for sine?
Back
sin(2θ) = 2sin(θ)cos(θ)
2.
FLASHCARD QUESTION
Front
What is the double angle formula for cosine?
Back
cos(2θ) = cos²(θ) - sin²(θ) or cos(2θ) = 2cos²(θ) - 1 or cos(2θ) = 1 - 2sin²(θ)
3.
FLASHCARD QUESTION
Front
What is the double angle formula for tangent?
Back
tan(2θ) = 2tan(θ) / (1 - tan²(θ))
4.
FLASHCARD QUESTION
Front
Simplify sin(2θ) using the double angle formula.
Back
sin(2θ) = 2sin(θ)cos(θ)
5.
FLASHCARD QUESTION
Front
Simplify cos(2θ) using the double angle formula (first version).
Back
cos(2θ) = cos²(θ) - sin²(θ)
6.
FLASHCARD QUESTION
Front
Simplify cos(2θ) using the double angle formula (second version).
Back
cos(2θ) = 2cos²(θ) - 1
7.
FLASHCARD QUESTION
Front
Simplify cos(2θ) using the double angle formula (third version).
Back
cos(2θ) = 1 - 2sin²(θ)
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