Sine,Cosine Rule Flashcards by Sean Sritharanayagam | Brainscape

Q

What is the sine rule

A

a = b = c. sinA sinB sinC.

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Q

What is the cosine rule for lengths

A

a2 = b2 + c2 - 2bc cos A.

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Q

What is the cosine rule for angles

A

CosA = b2+C2-A2
————-
2BC

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Q

Rule for area

A

½ absinC

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