Maths Formulae needed to know for Edexcel Core 2 Maths. 3.5 / 5 based on 3 ratings ? MathematicsASAll boards Created by: Danni CrockwellCreated on: 03-05-12 18:14 LAWS OF LOGARITHMS logax + logay = loga(xy) logax - logay = loga(x/y) klogax = loga(x^k) 1 of 5 RADIAN MEASURE Arc length: L=rѲ Sector area: A=(1/2)r²Ѳ Ѳ is in radians 2 of 5 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 3 of 5 TRIG IDENTITIES TanѲ = SinѲ/CosѲ Sin²Ѳ + Cos²Ѳ = 1 4 of 5 TRIG TRANSFORMATIONS Sin (90° -Ѳ 5 of 5
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