equations and values Flashcards
1
Q
sin(30)
A
1/2
2
Q
sin(0)
A
0
3
Q
sin(45)
A
√2/2 or 1/√2
4
Q
sin(60)
A
√3/2
5
Q
sin(90)
A
1
6
Q
cos(0)
A
1
7
Q
cos(30)
A
√3/2
8
Q
cos(45)
A
1/√2 or √2/2
9
Q
cos(6)
A
1/2
10
Q
cos(90)
A
0
11
Q
tan(0)
A
0
12
Q
tan(30)
A
1/√3 or √3/3
13
Q
tan(45)
A
1
14
Q
tan(60)
A
√3
15
Q
area of a rectangle
A
length x width
16
Q
area of a parallelogram
A
base x perpendicular height
17
Q
area of a triangle
A
(base x perpendicular height)/2
18
Q
area of a trapezium
A
1/2 x (a+b) x h
19
Q
circumference of a circle
A
πd or 2πr
20
Q
area of a circle
A
πr²
21
Q
pythagoras ‘ theorem
A
a² + b² = c²
22
Q
trigonometric ratio for tan
A
tan(x) = opposite/adjacent
23
Q
trigonometric ratio for sine
A
sin(x) = opposite / hypotenuse
24
Q
trigonometric ratio for cosine
A
cos(x) = adjacent/hypotenuse
25
quadratic formula
(-b +- √b² - 4ac)/2a
26
volume of a cuboid
length x width x height
27
volume of a prism
corss sectional surface area x length
28
volume of a cylinder
πr² x h
29
volume of a pyramid
1/3 x perpendicular height x area of base
30
speed
distance/time
31
density
mass/volume
32
pressure
force/area
33
sine rule
a/sinA = b/sinB = c/sinC
34
cosine rule
a² = b² + c² - 2bc cosA
35
area of a triangle
1/2 x a x b x sinC
