Math - Formulas Flashcards
What is the equation to find the slope between two points?
A(x1, y1) and B(x2, y2)
(y2 - y1)
(x2 - x1)
What is the equation of a line? (i.e. Slope-Intercept Form)
y = mx + b
m = slope, b = y-intercept
What equation is used to find the midpoint between two points(i.e. Midpoint Formula)?
A(x1, y1) and B(x2, y2)
(x1 + y2), (y1 + y2)
2________2
What word is synonymous with average?
Mean
How do you find the mean?
sum of the terms
the number of terms
How do you find the average speed?
Total distance
Total time
A probability has to be between what two numbers?
0 and 1
What equation is used to find probability?
number of good outcomes
total number of outcomes
What equation is used to find the probability of 2 Independent events?
Prob(A) x Prob(B)
How do you calculate total number of combinations?
Number of A * Number of B…
How do you calculate the area of a rectangle?
A = lw
l = length, w = width
How do you calculate the perimeter of a rectangle?
`
How do you calculate the perimeter of a rectangle?
P = 2l + 2w
l = length, w = width
How do you calculate the volume of a rectangular solid
(basically a cube)
V = lwh
l = length, w = width, h = height
How do you calculate the volume of a rectangular solid
(basically a cube)
V = lwh
l = length, w = width, h = height
How do you calculate the area of a parallelogram?
A = lh
l = length, h = height
How do you calculate the area of a triangle?
A = (1/2)bh
b = base, h = height
What is the equation for Pythagorean’s Theorem?
a2 + b2 = c2
a = leg 1, b = leg 2, c = hypotenuse
For what type of triangle can you use Pythagorean’s Theorem?
Right Triangle
A triangle with 2 equal side lengths is called a(n):
Isosceles Triangle
How do you calculate the area of a circle?
A = π r2
r = radius
How do you calculate the circumference of a circle?
2 π r
r = radius
What trig function is opposite / hypotenuse?
Sine
What trig function is adjacent / hypotenuse?
Cosine
What trig function is opposite / adjacent?
Tangent
What mnenomic can you use to remember sine, cosine, and tangent?
SOH CAH TOA
What is the opposite of sine?
Cosecant
What is the opposite of cosine?
Secant
What is the opposite of tangent?
Cotangent
What does Sin2θ + Cos2θ equal?
1
