SAT Math Formulas

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SAT

Math

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20 Terms

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Slope of the line

(y2-y2)/x2-x1)

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Distance Formula

āˆš(x2-x1)Ā²+(y2-y1)Ā²

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Midpoint Formula

(x1+x2)/2,(y1+y2)/2

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Slope-Intercept

y=mx+b

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Standard Form

Ax+By=C

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Standard form slope

-A/B

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standard form y-intercept

(0,C/B)

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horizontal line

y=#. m=0`

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vertical line

x=#, m=undefined

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30-60-90 Triangle

knowt flashcard image
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Pythagorean Theorem

aĀ²+bĀ²=cĀ²

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45-45-90 Triangle

knowt flashcard image
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Area of triangle

A=(1/2)bh

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circle graph equation

(x-h)Ā²+(y-k)Ā²=rĀ²; center=(h,k)

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circumference

2Ļ€r

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Area of Circle

Ļ€rĀ²

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Length of arc

(n/360)2Ļ€r; n=inner circle angle

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area of sector

(n/360)Ļ€rĀ²

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<p>Inscribed Angle</p>

Inscribed Angle

māˆ BEC=1/2m.arcBC, m.arcBC=2*āˆ BEC

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