Area of triangle non right angle
½ab x sin(C)
Sine rule (for lengths)
a/sin(A) = b/sin(B)
Sine rule (for angles)
sin A/a = sin B/b
Cosine rule (for lengths)
a2= b2 + c2 - 2bc x cosA
Cosine rule (for angles)
Cos(-1) = b2 + c2 - a2 / 2bc
quadratic formula
the picture
probability
P(A and B) = P(A given B) x P(B)
area of right angle triangle
½( b x h )
area of parallelogram
base x height
circumference of circle
2 x π x r
area of circle
π x r2
area of trapezium
½ (a + b) x h
volume of cuboid
length x width x height
volume of cylinders or prisms
length x area of cross section
Pythagoras theorem
a2 + b2 = c2
sin
cos
tan
speed
distance / time
density
mass / volume
compound interest
probability
P(A or B) = P(A)+ P(B) - P(A and B)
sum of interior angles
(number of sides - 2) x 180