Gcse Flashcards by Grace Caroe | Brainscape

Q

The quadratic formula

A

x= (-b±√(b2-4ac)) /2a

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Q

The cosine rule (cos A as subject)

A

cos A = (b2+c2-a2) / 2bc

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Q

The equation of a circle

A

(x – a) + (y – b) = r is the equation of a circle with centre
(a, b) and radius r.

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