Geometry Flashcards by Hannah Savill | Brainscape

Q

Cosine Rule

A

a² = b² + c² -2bc(cosA)

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Q

Sine Rule

A

sinA/a = sinB/b = sinC/c

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Q

Cosine Rule ( cosA = )

A

cosA = (b² + c² - a²)/2bc

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Q

Area of Triangle

A

1/2 a b sinC

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Q

Area of segment area

A

1/2r²( θ - sinθ )

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Q

Area of sector area

A

1/2r²θ

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Q

Arc length (s)

A

s = θ r

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