AP Pre Calc Formula

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Last updated 4:20 AM on 3/3/26
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20 Terms

1
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Arithmetic Sequence Formula

an​=a1​+(n−1)d

2
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Arithmetic Sequence Sum Formula

Sn=n/2(2a1+(n−1)d)

3
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Geometric Sequence Formula

a​n=a1(r)^n-1

4
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Geometric Sequence Sum Formula

a1(1-r^n/1-r) r≠1

5
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Half Life Formula

A0(1/2)^t/h

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Doubling Time Formula

A0(2)^t/h

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Sin x

1/csc x

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Cos x

1/sec x

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Tan x

1/cot x

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tan x

sin x/cos x

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cot x

cos x/sin x

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Sin²x+Cos²x

=1

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1+Tan²x

=Sec²x

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1+Cot²x=Csc²x

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sin(A+B)

=sinAcosB+cosAsinB

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sin(A−B)

=sinAcosB−cosAsinB

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cos(A+B)

=cosAcosB−sinAsinB

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cos(A−B)


=cosAcosB+sinAsinB

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Period

2π/b

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Vertex

-b/2a