Formula List Flashcards
1
Q
Quadratic
A
2a
2
Q
Pythagoras
A
a²+b² = c²
3
Q
Trigonomery
A
sin = opp/hyp (SOH) cos = adj/hyp (CAH) tan = opp/adj (TOA)
4
Q
Cosine rule - for the side
A
a² = b²+c²-2bcxcos(A)
5
Q
Reverse cosine rule - for the angle
A
A = -1 (b²+c²-a²)
cos x ( 2bc )
6
Q
SIne rule - for the length
A
a b c
——— = ——— = ———
sin(A) sin(B) sin(C)
7
Q
Sine rule - for the angle
A
sin(A) sin(B) sin(C)
——— = ——— = ———
a b c
8
Q
Trapezium area
A
2
9
Q
Circle area
A
πr²
10
Q
Equilateral triangle area
A
2
11
Q
Triangle area
A
0.5xabxsin(C)
12
Q
Density
A
Volume
13
Q
Distance
A
Speed x Time
14
Q
Frequency density (what is this used for?)
A
Frequency
—————– (Histograms)
Class Width
15
Q
Prism volume
A
Area cross section x length
