## Overview

Here is a typical sinusoid:

The most general mathematical formula for a sinusoid is $$x(t)=A \cos(2 \pi f_0 t + \phi)$$
The goal of this demo is to learn how to sketch a sinusoid given its formula and to write the formula of a sinusoid given its plot.

## Tutorial

Here is a quick tutorial on how to sketch a plot from an equation, and here is a tutorial on going the other way.

## MATLAB

Here is how to plot sines in MATLAB.

## Sine Drill

This will take you to MATLAB GUI (graphical user interface) that tests your ability to go from plots of cosine waves to equations.