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
