area of circle
pie r squared
circle circumference
pie diameter
equation of circle
x² + y² = r²
equation of line
y = mx + c
direct proportion
y = kx
indirect proportion
y = k/x
volume of a cone
1/3 pie r² h
SA of curved cone
pie r L
area of triangle
½ b h
n.o of sides
(n-2) x 180
density =
mass / volume
sin rule
A / sin A = B / sinB = C / sinC
or
sin A / A = sinB / B = sinC / C
cos rule
cosA = b² + c² - a² / 2bc
or
a² = b² + c² - 2bcCosA