Formulas Flashcards
1
Q
Labelling non right angle triangle
A
Sides = abc Angles = ABC
2
Q
Area of a non right angle triangle
A
1/2 absinC
3
Q
Circumference of a circle
A
πd
4
Q
Tan trig.
Right angle
A
Tan χ = Opp / adj
5
Q
Area of a circle
A
πr^2
6
Q
Volume of a pyramid
A
1/3 x area of base x height
7
Q
Area of a trapezium
A
1/2 (a+b) h
8
Q
Pressure
A
Force / area
9
Q
Density
A
Mass / volume
10
Q
Cosine rule
Non right angle
A
a^2 = b^2 + c^2 - 2bc CosA
11
Q
Volume of a cuboid
A
Length x width x height
12
Q
Pythagoras theorem
Right angle
A
a^2 + b^2 = c^2
13
Q
Sin trig.
Right angle
A
Sin χ = opp/ hyp
14
Q
Sine rule
Non right angle
A
a/sinA = b/sinB = c/sinC
15
Q
Cos trig.
Right angle
A
Cos χ= adj / hyp
