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C2 Revision Key points

Sequences and series

1. A
seque nce us
an
ordered se t
of
nu mb e rs,
a1,
a2,a3 ,
. . .,
a N, where aK i
s
th e gen er
al
ter
m
2. A
seri
es
is
the sum of
the t…

Page 2

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Tan 0 1/3 1 3 undefin 0
ed





2.

3.
Sin /Cos= Tan (cos 0 does not equal 0), Sin²+ Cos²= 1















4 .
For a
tri
angl
e ABC ,


Area = 1/
2ab si
n C

a/Sin
A
= b/
SinB =
c /S i
nc f
or…

Page 3

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6. Angles
can b e me asu r
e d
in radians.
r adi
ans
= 180 °
7. To
co nver
t
d e gr
e es int
o
radi an:
A ngl
e *
/180
8. To
co nver
t
ra dia ns i
n to d egr…

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Integration


+c






Area
A =











(
x)


11. You
can
use
the
tr
apezi
um
rul
e,
w i
th
n st
ri
ps
of
w i
dth
h,
to
fi
nd
an
appr
opr
iat
e val
ue
for
a
defi
nit
e i
ntegr
alS
b
























a (…

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