sat math formulas

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sum of the roots

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all math formulas needed for digital sat

10 Terms

1

sum of the roots

-b/a

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2

product of the roots

c/a

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3

vertex formula

x = -b/2a

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4

mid-point formula

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

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5

vertex form

y = a(x-h)² + k

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6

complimenting rule

sin (x) = cos (90-x)

cos (x) = sin (90-x)

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7

arc length

arc length = part of the circumference

2πr * angle/360

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8

sector area

sector area = part of the area

πr² = angle/360

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9

equations of a circle on the coordinate plane

(x-h)² + (y-k)² = r²

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10

density formula

density = mass/volume

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