Formulae Flashcards
1
Q
What is the quadratic equation?
A
x = -b(+-)squareroot(b^2-4ac) / 2a
2
Q
What is Pythagoras’ theorem?
A
a^2 + b^2 = c^2
3
Q
What is the Sine rule?
A
a/SinA = b/SinB = c/SinC
4
Q
What is the Cosine rule?
A
a^2 = b^2 + c^2 - 2bc cosA
5
Q
What is the Area of a triangle?
A
1/2 ab sinC
6
Q
What does P(A and B) equal?
A
P(A) x P(B)
7
Q
What does P(A) OR P(B) equal?
A
P(A) + P(B)
8
Q
Speed equals?
A
Distance / Time
9
Q
Density equals?
A
Mass / Volume
10
Q
Pressure equals?
A
Force / Area
11
Q
What is the area of a trapezium?
A
1/2(a+b)hv
