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SAT Prep Vocab
| Question | Answer |
|---|---|
| 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