Maths

Formulae needed to know for Edexcel Core 2 Maths.

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LAWS OF LOGARITHMS

logax + logay = loga(xy)

logax - logay = loga(x/y)

klogax = loga(x^k)

 

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RADIAN MEASURE

Arc length: L=rѲ

Sector area: A=(1/2)r²Ѳ

Ѳ is in radians

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NON RIGHT-ANGLED TRIANGLES

a/sinA = b/sinB = c/sinC (for the length of a side)

sinA/a = sinB/b = sinC/c (for an unknown angle)

triangle area= (1/2)abSinC

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TRIG IDENTITIES

TanѲ = SinѲ/CosѲ

Sin²Ѳ + Cos²Ѳ = 1

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TRIG TRANSFORMATIONS

Sin (90° -Ѳ

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Comments

karim

very nice

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