Trigonometric Ratios Flashcards by Geralt Hwa | Brainscape

Q

Cosine rule

A

a^2 = b^2 + c^2 - 2bc.cosA

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Q

Sine rule

A

a/sinA = b/sinB = c/sinC

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Q

Are of a triangle

A

A = 0.5absinC

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