Graphing a Reflection with a Cosine Functions

The video tutorial explains the concepts of amplitude and period in a cosine graph. It identifies four important points in one cycle and describes how to calculate intervals between these points. The tutorial also covers graphing the cosine function, including reflections, and discusses extending the graph in both positive and negative directions.

What is the significance of the amplitude in a cosine graph?

Explain how the reflection of a cosine graph affects its crossing points.