equations and values Flashcards
sin(30)
1/2
sin(0)
0
sin(45)
√2/2 or 1/√2
sin(60)
√3/2
sin(90)
1
cos(0)
1
cos(30)
√3/2
cos(45)
1/√2 or √2/2
cos(6)
1/2
cos(90)
0
tan(0)
0
tan(30)
1/√3 or √3/3
tan(45)
1
tan(60)
√3
area of a rectangle
length x width
area of a parallelogram
base x perpendicular height
area of a triangle
(base x perpendicular height)/2
area of a trapezium
1/2 x (a+b) x h
circumference of a circle
πd or 2πr
area of a circle
πr²
pythagoras ‘ theorem
a² + b² = c²
trigonometric ratio for tan
tan(x) = opposite/adjacent
trigonometric ratio for sine
sin(x) = opposite / hypotenuse
trigonometric ratio for cosine
cos(x) = adjacent/hypotenuse
quadratic formula
(-b +- √b² - 4ac)/2a
volume of a cuboid
length x width x height
volume of a prism
corss sectional surface area x length
volume of a cylinder
πr² x h
volume of a pyramid
1/3 x perpendicular height x area of base
speed
distance/time
density
mass/volume
pressure
force/area
sine rule
a/sinA = b/sinB = c/sinC
cosine rule
a² = b² + c² - 2bc cosA
area of a triangle
1/2 x a x b x sinC
