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SAT Prep Vocab

Supplementary Angles 2 angles whos sum is 180
Chord segments whos endpoints are in a circle
Area of a circle pir^2
Circumference of a circle 2pir
Slope formula (y2-y1)/(x2-x1) = rise/run
Midpoint formula (x1+x2/2 , y1+y2/2)
Distance formula d= the sqrt((x2-x1)^2+(y2-y2)^2)
Equation of a circle (x-h)^2+(y-k)^2=r^2 Center of the circle is (h,k)
Equation of an Ellipse (x-h)^2+(y-k)^2=1
Remember for sin, cos, and tan SOHCAHTOA
Secant 1/cos
Cotangent 1/tan
Remember sin and cos sin^2 the angle + cos^2 the angle=1
Percent increase/decrease change in the amount/original amount x 100
Difference of squares formula (FOIL) a2 – b2 = (a + b)(a – b) or (a – b)(a + b)
Systems of equations Substitute
is, has, was, will, be =
more, total increases by, exceeds, gains +
less, decreased, lost, fewer, difference -
of, product, each x
Rates distance= rate x time
vertex h=
Range difference between the smallest and the largest number
Mean the average -add them up and divide by the total added
Median the middle value in a set of numbers
Mode the number that repeats the most in a set of numbers
Probability desired outcomes/total outcomes
Domain x
Range y
Created by: alexs13
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