Mathematics

Polynomial functions
x=2 is a constant equation
y=x+1 is a linear equation
y=x^2+2 is a quadratic equation
y=x^3+x^2+x+5 is a cubic equation
Trignometric functions
sin(x)=(opposite side)/hypt
cos(x)=(adjacent side)/hypt
tan(x)=(opposite side)/(adjacent side)

sin^2(x)+cos^2(x)=1
1+tan^2(x)=sec^2(x)
tan(x)=sin(x)/cos(x)
sec(x)=1/cos(x)
cosec(x)=1/sin(x)
Unit conversions
1m=100cm
1km=1000m
1mm=10^-3m
1um=10^-6m
1inch=2.54cm
1Angstrom=10^-10m

Geometry formulas
Area of a square=a^2
Perimeter of a square=4a

Area of a rect=a*b
Perimeter of a rect=2(a+b)

Area of a circle=pi*r^2
Perimeter of a circle=2*pi*r

Area of parallelogram=b*ht
Perimeter of parallelogram=2(a+b)
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