act memorize equations

STUDY THESEESESESEILFJAIOPGJPOIASJHORSG

Slope-intercept

y = mx+b

solve for slope

quadratic formula

discriminant

midpoint formula

distance formula

area of a triangle

area of a circle

circumference of a circle

pythagorean theorem

volume of rectangular prism

volume of cylinder

area of a trapezoid

interior angle sum

logarithmic

mean

sum of terms/number of terms

speed

speed = distance/time

probability of one outcome

desired outcomes/total outcomes

either/or outcome

probability of event a/total + probability of event b/total

both outcome

percentage

rectangle area

A = lw

perimeter rectangle

p = 2l + 2w

volume of rectangle solid

v = lwh

area of parallelogram

a = l(h) → find h using pythagorean theorem

30-60-90 rule

x, x√3, and 2x. with the size (small, middle biggest) opposite to the (small, middle, biggest angle)

45-45-90 rule

x, x, x√2 with the size (small, middle biggest) opposite to the (small, middle, biggest angle)

area of a trapezoid

area = [(parallel side a, parallel side b)/2]h

area of a sector of circle

circumference of sector of circle

circle equation

given radius is (h,k)

volume of cylinder

Volume=πr²h

trig basics

SohCahToa → 1/sin = csc, 1/cos = sec, 1/tan = cot

useful trig formula to remember

sin²x + cos²x = 1, 1+tan²x = sec², 1+cot²x=csc²x