Learning the basics to graph the cosine function with its points

The video tutorial revisits basic graphing concepts, starting with the equation y = X + 1, and progresses to understanding functions and their properties. It introduces the concept of input and output in functions, using function notation. The tutorial then explores the cosine function through the unit circle, explaining how to determine output values for given angles. Finally, it demonstrates how to graph the cosine function, highlighting its periodic nature and the relationship between angles and their corresponding cosine values on the unit circle.

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