What do angle have to do with waves? Why do we use trigonometric functions to model waves?
127247
Why are cosine and sine functions used when representing a signal or a wave?
5080
How can we sum up $\sin$ and $\cos$ series when the angles are in arithmetic progression?
97213
Why does $\sin(0)$ exist?
120302
Uncertainty and wave-trains
104410
Why do we omit the negative sign when finding basic angle when solving trigonometric equations?
151182
Creating sine or square wave in C#
136595
Wave reflection and open end boundary condition intuition
57239
Why is energy in a wave proportional to amplitude squared?
75398
meaning of powers on trig functions
26638
Why do travelling waves continue after amplitude sum = 0?
84420
When is $\sin(x) = \cos(x)$?
53371
What's a good textbook to learn about waves and oscillations?
124897
How many ways are there to define sine and cosine?
59282
What is the significance of angular frequency $\omega$ with regards to wave functions?
100777
Finding the derivatives of sin(x) and cos(x)
68467
How to determine whether a wave is travelling or standing?
77810
Solving Trigonometric Derivatives