MUST KNOW Formula Flashcards
Pythagoras Theorem
c squared = a squared + b squared
Right-angled Trigonometry
SoH CaH ToA
Sin= opp/hyp
cos= adj/hyp
tan= opp/adj
Area of a Triangle
A=1/2 x b x h
Area of a Circle
A= pi x radius squared
Volume of a Prism
V= Area x height
Volume of a Cuboid
V= l x b x h
Volume of a Cylinder
V= pi x radius squared x h
Gradient of a Line
m = y2-y1/x2-x1
Equation for a Straight Line
y-b=m(x-a) or y= mx+c
Length of an Arc
AL = x/360 x pi x D
Area of a Sector
AS = x/360 x pi x radius squared
Discriminant
b squared - 4ac
Trig Identities
tanx= sinx/cosx
cos squared x + sin squared x = 1
Magnitude of a Vector
a= the square root of a1 squared + a2 squared + a3 squared
Semi Inter-Quartile Range (SIQR)
Q3(upper quartile) - Q1 ( lower quartile) / 2
Percentage Increase/Decrease
Increase(decrease/original x 100
c squared = a squared + b squared
Pythagoras Theorem
SoH CaH ToA
sin=opp/hyp
cos= adj/hyp
tan = opp/adj `
Right-Angled Trigonometry
A= 1/2 x b x h
Area of a Triangle
A = pi x radius squared
Area of a Circle
V = Area x height
Volume of a Prism
V = l x b x h
Volume of a Cuboid
V = pi x radius squared x h
Volume of a Cylinder
m = y2-y1/x2-x1
Gradient of a Line
y-b=m(x-a) or y=mx+c
Equation for a Straight Line
AL= x/360 x pi x D
Length of an Arc
AS = x/360 x pi x radius squared
Area of a Sector
b squared - 4ac
Discriminant
tanx=sinx/cosx OR cos squared x + sin squared x = 1
Trig Identities
a = the square root of a1 squared+a2 squared+a3 squared
Magnitude of a Vector
Q3(upper quartile) - Q1(lower quartile) / 2
Semi Inter-Quartile Range (SIQR)
Increase(Decrease)/original x 100
Percentage Increase/Decrease
