c2

c2 formulas

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Equation of a line

y – y1 = m(x-x1)

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Equation of a circle

(x+a)2 + (y-b)2 = r2

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Lenght of an arc

L = R x angle

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Area of an arc

A = ½ r2 x angle

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Sine Rule

    A           B     

Sin a   =   Sin b

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Cosine Rule

a2 = b2 + c2 – 2bc cosA

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Area of a triangle

½ ab sinC

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Comments

slide 2 should say (x-a)2 + (y-b)2 = r2 shouldn't it?

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