sat math formulas

all math formulas needed for digital sat

sum of the roots

-b/a

product of the roots

c/a

vertex formula

x = -b/2a

mid-point formula

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

vertex form

y = a(x-h)² + k

complimenting rule

sin (x) = cos (90-x)

cos (x) = sin (90-x)

arc length

arc length = part of the circumference

2πr * angle/360

sector area

sector area = part of the area

πr² = angle/360

equations of a circle on the coordinate plane

(x-h)² + (y-k)² = r²

density formula

density = mass/volume