geometry

cosine

adjacent/hypotenuse

sine

opposite/hypotenuse

tangent

opposite over adjacent

volume of a cylinder

pi(r)^2\*h

volume of rectangular prism

Bh^2

volume of triangular prism

B/2\*h^3

volume of a cone

pi(r)^2\*h/3^3

volume of a triangular pyramid

B/2\*h/3

Volume of a square pyramid

Bh/3^3

equation of a circle

(x-h)^2+(y-k)^2=r^2

slope of a line

rise/run