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Units, Vectors - Coggle Diagram
Units, Vectors
Vectors
Have both magnitude and direction
Scalars have magnitude only
Ways to represent vectors
Boldface notation
Arrow notation
Component notation
How to add two or more vectors?
Add the corresponding components from each vector
Units of measurement
Basic units
Second
Time
Metre
Length
Kilogram
Mass
Ampere
Electricity
Kelvin
Temperature
Prefixes
nano
micro
mili
centi
deci
kilo
mega
giga
pico
On a right-angled triangle, how to use trigonometry and Pythagoras theorem?
Applying Phythagoras Theorem
c = sqaure root a^2 + b^2
b = square root c^2 - a^2
Applying trigonometry
sin = opposite/hypotenuse
cosine = adjacent/hypotenuse
tangent = opposite/adjacent
State sine law and cosine law used on a triangle
Sine law
Used to find an angle from 3 sides and an angle
A side from 3 angles and a side
Cosine law
Used to find a side from 2 sides and the included angle
An angle from 3 sides