Formulae on formula list Flashcards by Errin Murray | Brainscape

Q

the quadratic formula

A

x = -b ± √(b² - 4ac)/2a

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Q

sine rule

A

a/sinA = b/sinB = c/sinC

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Q

cosine rule (angles)

A

CosA = (b² + c² - a²) / 2bc

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Q

Cosine Rule (side length)

A

a² = b² + c² - 2bcCosA

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Q

area of triangle

A

A=1/2absinC

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Q

volume of sphere

A

V=4/3πr³

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Q

volume of a cone

A

V=1/3πr²h

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Q

Volume of a pyramid

A

V=1/3Ah

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Q

standard deviation

A

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