Math Formulas, ACT PREP

Law of Cosines

A²=B²+C²-2BC cos(A)

Law of Sines

Vector Translations

i = x, j = y, (on graph)

Inequality Shading ( <, <_ )

SHADE BELOW LINE!!!

Inequality Shading (>, _>)

SHADE ABOVE LINE!!!

Special Right Triangles

Pie/2

90o

Pie

180o

3Pie/2

270o

2Pie

360o

Tangent

% DECRESAL

P(1-r)

LogaB = c

A^c = B

Radian Formula

Rad = Arc/Radius

Midpoint Form

Distance Form

Systems of Equations

PLUG VARIABLES BACK IN!!!

PLUG VARIABLES BACK IN!!!

Cos Sin QUADRANTS

Circle Circumference Formula

C = 2PieR

Area of Circle

A= PieR

Diameter of a circle

2R

Area of a Square

S² = A

SQUARE Perimeter Formulas

4S or Squar root A

Rectangle Area

A = LW

Rectangle Perimeter Formyla

2L+2W

Hexagon Area

Trapazoid area

Parrolemogram area

A = BH

Axis of Symettry

-b/2a

Right Triangle formula + SPECIALs

A²+B²=C²

Sum of Roots

-b/a

Product of roots

c/a (quadratic) -c/a (Cubic)

Function form

F(x) = (Problem) x= domain Probpem = range.

Absaloute Value

(flip inequalities) if neg

Speed form

S = dt

Vertex form

y=a(x-h)²+k

slope intercept form

y = mx+b