What is the half-angle formula for cosine?
Lecture #22 (Exam #4 Review) - Fall 2024
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Mathematics
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University
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Hard
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1.
FLASHCARD QUESTION
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2.
FLASHCARD QUESTION
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Use the half-angle formula: @@ ext{cos}igg( rac{5 ext{π}}{12}igg) = ext{cos}igg( rac{2 ext{π}}{3}igg) = - rac{1}{2}$$ and then apply the half-angle formula.
3.
FLASHCARD QUESTION
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4.
FLASHCARD QUESTION
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5.
FLASHCARD QUESTION
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What is the Pythagorean identity?
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6.
FLASHCARD QUESTION
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7.
FLASHCARD QUESTION
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What is the product-to-sum formula for sine?
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