Studied by 59 peopleConversion between mile and km
1 mile = 1.6km
Conversion between kg and lb
1kg = 2.2 lb
Conversion between L and Pints
1L = 1.75pints
Formula for finding the sum of all interior angle of a polygon
Sum of interior angle = (Number of sides - 2) * 180
What adds up to 180 degree in a polygon
Exterior and interior angle
How to find the number of sides in a polygon
Number of sides = 360/ exterior angle
How to find the exterior angle
Sum of all the exterior angle adds up to 360 degree
Formula for cosine rule used to find angle
CosA = b²+c²-a²/2bc
How to find the circumference of a sector
2πr * θ/360
How to find the area of a sector
πr² * θ/360
How does vector work
Top number mean left / right
Button number mean up / down
How does graph transformation function works
If the number is inside of the bracket, then it affects the x-axis.
If the number is outside of the bracket, then it affects the y-axis
Formula for stratified sampling
Sample size / population size * stratum size
Give the 4 rule for congruent triangle
SSS
SAS
ASA
RHS
How to calculate population density
Population density = population / land area
What is the points of AER
Makes it easier to compare finance account
Explain the 4 different type of sampling
Random - selecting people at random. Everyone has an equal chance
Systematic - start random then static selection such as 10th, then 20th
Stratified - pick a places such as classroom then random selection
Quota - pick a sample as far as possible
Problems with sampling
Small sample size
Time being sampled
Do not consider other people or nationals
Y = X² graph
Red = original line
Y = X² + a
Red = original line
Y = X² - a
Red = original line
Y = ax²
Red = original line
Y = X² / 2
Red = original line
Y = -X²
Red = original line
Y = (X+a)²
Red = original line
Y = (X-a)²
Red = original line
Y = (ax)²
Red = original line
Y = (x/2)²
Red = original line
Y = (-X)³
Red = original line
Y = 1/X
Red = original line
Formula for percentage increase
What is the nth term for triangular sequence
name all 3 parallel line angle rule
Corresponding angle (F)
Alternate angle (Z)
Interior angle ( [ )
Venn Diagram notation:
A n B
A u B
Compound interest formula
Compound interest = Amount * (1+interest rate)^year
Trapezium rule
h/2 * (y0 + yN + 2 * (y2+y3+y4+…)
is frequency polygon line graph or bar chart
line graph
How much does UQ and LQ equals to in boxplot
UQ = ¾
LQ = ¼
How to calculate the interquartile range
UQ - LQ
Equation of a straight line
y = mx + c
In an inequality graph, what does the dash line represent
The dash line represent < or > sign
What is the curved surface area of a cylinder
2πrh
What is the frequency density of a histogram
The height (y-axis)
What is the formula for frequency density
FD = Frequency / CW
State the 7 circle theorem rule
Tangent perpendicular to the radius is 90 degree
Angle in a semicircle equals to 90 degree
Alternate segment theorem
The lengths of two tangents from a point are always equal
Opposite angles in a cyclic quadrilateral add up to 180 degree
Angle in the same segment are equal
The angle at the centre is double the angle at the circumference.
Formula for density
Density = Mass / Volume
What is the value of sin0, sin90, sin180, sin270, sin360
Sin0 = 0
Sin90 = 1
Sin180 = 0
Sin270 = -1
Sin360 = 0
What is the value of Cos0, Cos90 Cos180, Cos270, Cos360
Cos0 = 1
Cos90 = 0
Cos180 = -1
Cos270 = 0
Cos360 = 1
What is the formula for the area and volume of cylinder
Volume = πrh
Surface area = 2πr² + πdh
Note
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