# Key Maths Formulae Flashcards

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created 13 years ago by mrprcollins
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All the Maths Formulae you need to know to pass your Maths Examinations (These are not given on the formula sheet at the start of the exam - UK)
updated 13 years ago by mrprcollins
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1

Pythagoras' Theorem

2

Area of a Triangle

b = base
h = height

3

Circumference of a Circle

Circumference = pi x diameter

THINK!! * Cherry pies delicious *

4

Area of a Circle

THINK!! * Apple pies are too *

5

Formula Triangle for Histograms...

Or...Frequency = Frequency Density x Class Width
Or...Class Width = Frequency / Frequency Density

6

Speed, Distance, Time

So, Distance = Speed x Time
Speed = Distance / Time
Time = Distance / Speed

7

Density, Mass, Volume

So, Density = Mass / Volume
Mass = Density x Volume
Volume = Mass / Density

8

Trigonometry Ratios (Sin, Cos & Tan)

REMEMBER!! SOHCAHTOA
Sin (of angle) = Opposite / Hypotenuse
Cos (of angle) = Adjacent / Hypotenuse
Tan (of angle) = Opposite / Adjacent