Graphing a Trig Function with Cosine

The video tutorial explains how to graph the cosine function by determining the amplitude and period. It covers the general form of the cosine equation, how to calculate the amplitude as the absolute value of 'a', and the period as 2π divided by 'B'. The tutorial also discusses graphing the cosine function, identifying critical points, and completing the graph with two cycles. It emphasizes the importance of understanding the parent function and dividing the graph into sections for accurate plotting.

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