Formula ( Inc Sin,cos,tan ) Flashcards
(23 cards)
1
Q
Density
A
Mass/volume
2
Q
A^1 =
A
A
3
Q
X^0
A
1
4
Q
X^m ❌ x^n
A
X^m+n
5
Q
X^m / x^n
A
X^m-n
6
Q
(X^m)^n
A
X^mn
7
Q
X^-m
A
1/x^m
8
Q
X^(n/m)
A
(^m root x) ^n
9
Q
Root a ❌ root b
A
Root ab
10
Q
Root a / root b
A
Root a/b
11
Q
Venn diagrams :
U
n
‘
A
Union
Intersection
Complement ( everything but ..)
12
Q
Speed
A
Distance / time
13
Q
Pressure
A
Force/area
14
Q
Histograms:
Frequency =
A
Class width x frequency density
15
Q
Sin: 0 30 45 60 90
A
0 1/2 1/ root 2 Root 3 / 2 1
16
Q
Cos: 0 30 45 60 90
A
1 Root 3 / 2 1/ root 2 1/2 0
17
Q
Tan: 0 30 45 60 90
A
0 1/ root 3 1 Root 3 Infinity
18
Q
Area of triangle: (2)
A
1/2 absinC
1/2 base x height
19
Q
Area of sphere
A
4pi r^2
20
Q
Formula for angles in polygon
A
( number of sides - 2) x 180
21
Q
Cosine rules
A
CosA = (b^2+c^2-a^2)/ 2bc
A^2 = b^2 + c^2 - 2bcCosA
22
Q
Sine rule
A
SinA/ a = SinB/b
Or
a/SinA = b/SinB
23
Q
Acceleration=
A
Change in acceleration / time taken
