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01 - Sine and Cosine
02 - Vectors vs scalars
03 - Labeling vectors and adding
04 - X and Y components of vectors
05 - 3D vectors annotation
06 - Introduction to the unit circle
07 - Degrees vs Radians
08 - Cartesian coordinate system
09 - Polar coordinate system
10 - The Imaginary unit
11 - Introduction to complex numbers
12 - Complex number in rectangular form
13 - Complex number in polar form
14 - Euler's formula
15 - Constructing a sine and cosine graph from rotating vector in the unit circle
16 - Wave parameters - Amplitude, Frequency, Phase, Period, Wavelength
17 - Electromagnetic waves
18 - Superposition of sine waves
19 - Fourier series
20 - Fourier transform
21 - Inverse Fourier transform
22 - Discrete Fourier transform
23 - 2D discrete Fourier transform
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03 - Labeling vectors and adding
Adding vectors in a 2D plane is explained here.
Theory
Demonstration
Sum of vectors in a 2D plane