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Page 1: FORMULAE LIST - MATHEMATICS - HOMEduggie.weebly.com/uploads/3/7/3/0/3730287/n5_notes_… ·  · 2016-03-25FORMULAE LIST! The roots of ax2+bx ... multiply the I topl and I bottoml
Page 2: FORMULAE LIST - MATHEMATICS - HOMEduggie.weebly.com/uploads/3/7/3/0/3730287/n5_notes_… ·  · 2016-03-25FORMULAE LIST! The roots of ax2+bx ... multiply the I topl and I bottoml

!

FORMULAE LIST

!

The roots of ax2 + bx + c = 0 are x ="b ± b2 " 4ac

2a , a # 0

!

Sine rule: asinA

=b

sinB=

csinC

!

Cosine rule: a2 = b2 + c2 " 2bccos A or cosA = b2 + c2 " a2

2bc

!

Area of a triangle: Area = 12 absinC

!

Volume of a sphere: Volume = 43 $ r3

!

Volume of a cone: Volume = 13 $ r2h

!

Volume of a pyramid: Volume = 13 Ah

!

Volume of a cylinder: Volume = $ r2h

!

Standard deviation: s =% x " x ( )2

n"1=

% x2 " % x( )2 nn "1

, where n is the sample size.

Page 3: FORMULAE LIST - MATHEMATICS - HOMEduggie.weebly.com/uploads/3/7/3/0/3730287/n5_notes_… ·  · 2016-03-25FORMULAE LIST! The roots of ax2+bx ... multiply the I topl and I bottoml
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