AP math formulas

secant

sec x = 1/cosx

Cube volume

s³

Tangent

tan x = sin x / cos x

inverse functions

when you know the side lengths but not the angles

Circle Area

πr²

Cylinder volume

πr²h

multiplying matrices

end result has same number of rows as #1 and same number of columns as #2

sum of the interior angles of any polygon

(n-2) x 180º

Rational

-1,-1/2,0,1/2,1

Real

-1,-1/2,0,1/2,1 and irrational numbers (√2 , π)

Integers

-3,-2,-1,0,1,2,3

Whole numbers

0,1,2,3,4,5....

Natural numbers

1,2,3,4,5...

Diameter

2r

Circle Circumference

2πr

Cylinder surface area

2πrh+2πr²

Sphere volume

4/3πr³

Sphere surface area

4πr²

Cube surface area

6s²

cos^2 + sin^2

=1

law of sines

a/sinA = b/sinB = c/sinC

complex numbers

all real numbers and imaginary numbers ( i )

cotangent

cot x = 1/tanx

cosecant

csc x = 1/sin x

law of cosines

c²=a²+b²-2abcosC