gcse maths, edexcel, higher tier- equations
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19 Terms
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Area of a trapezium
1/2 (a+b) x h
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Volume of a prism
Area of cross section x length
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Circumference of a circle
2πr or πd
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Are of a circle
πr2
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Quadratic Formula
x = -b ± √(b² - 4ac)/2a
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pythagoras theorem
a² + b² = c²
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sine rule (lengths)
a/SinA=b/SinB=c/SinC
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sine rule (angles)
SinA/a=SinB/b=SinC/c
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sine rule (angles)
1/2 a b SinC
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Cosine Rule for Side Lengths
a² = b² + c² - 2bcCosA
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Cosine Rule for Angles
CosA=(b2+c2-a2)/2bc
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arc length
angle/360 x πd
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Area of a sector
Area of a Sector = (central angle/360) x πr²
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Radius of a sector
r2=area/(angle/360) x pi)
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angle of a sector
(a/pi x r^2) x 360
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Volume of a sphere
4/3πr³
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Compound Interest Formula
A=P(1+r/n)^nt
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and rule
multiplication
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or rule
addition
Note 
Flashcards (80)