Precalculus 11 Formula Sheet
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1PreCalculus 11 Formula Sheet
Quadratic Formula
2
b
b
4
ac
− ±
−
x
=
2
a
Sine Law
Sin A
Sin B
Sin C
=
=
a
b
c
Cosine Law
2
2
2
c
=
a
+
b
−
2
ab
cos
C
Sequence & Series
n
−
1
t
t
(
n
) 1
d
t
t
r
=
+
−
=
⋅
n
1
n
1
n
t
(
r
−
) 1
n
1
S
=
S
(
t
t
)
=
+
n
n
1
n
r
−
1
2
rt
t
−
n
1
n
S
=
n
S
=
2 (
t
+
(
n
−
) 1
d
)
r
1
−
n
1
2
t
1
S
=
∞
1
−
r
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