Maths equations Flashcards
some are in the exam paper in higher but still worth learning, also some apply to physics aswell (19 cards)
what is the formula for the area of a triangle
A= BxH/2 (/ = divded)
what is the formula for the area of a circle
A= πxr^2 (^ = making a number squared etc)
what is the formula for the circumference of a circle
C = πxD
what is the formula for the area of a trapezium
A = top + bottom /2 x height
what is the formula for the area of a parallelogram
A= b x h
what is the formula for the volume of a cylinder
V = cross section ( π x r ^2) x height
what is the formula for pythagoras theorem
c^2 = a^2+b^2
c squared = a squared + b squared to find out C you do the square root
whats the formula for the cosine rule
IN EXAM PAPER FOR HIGHER
a^2= b^2+c^2-2bcCosA
saerch up an image its easier to read than this shittaiu
what is the formula for direct proportion
NEED TO LEARN
x=ky^X
^x = any number as a power
where x is DIRECTLY proprtional to y
what is the formula for inverse proprtion
NEED TO LEARN
x =k / y^x
^x = any power eg y squared
what is the formula for the area of a triangle IF THERES NO HEIGHT
1/2 x abxSin C
C = angle ab= two sides multiplied together
what is the formula for the area of a sector NEED TO KNOW EASY MARKS
π x r^2 x angle / 360
angle is also sometimes known as THETA and has a weir symbol θ
what is the formula for the equation of a straight line
y = mx+c
m = gradient c = y intercept
what is the formula of the gradient of a line
m = change in y coordinates / change in x coordinates
m = gradient
what is the formula for frequnecy density in histograms EASY MARKS
frequency / class width
class width is foun by the range NOT THE MIDPOINTS eg 10>x<20 = 10
applies to physics too what an academic weapon
what is the formula for density
mass / volume
if you dont know this one ypure acc retarded
what is the formula for speed
speed = distance / time
neber seen this one com eup but whatevs
what is the formyla for pressure
force / area
whats the formula for the volume of a pyramid
1/3 x area of base x perpendicular height
