Trigonometry Flashcards by Rose Warth | Brainscape

Q

The sine rule

A

a/Sin(A) = b/Sin(B) = c/Sin(C)

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Q

The cosine rule

A

A² = b² + c² - 2bcCos(A)

Or

b² + c² - a² / 2bc

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Q

Area of a triangle

A

1/2 x abSin(C)

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