What is the domain of sine and cosine graph

The video tutorial explains how to find the domain of sine and cosine functions. It begins by discussing the concept of domain in functions, emphasizing the importance of unique input-output pairs. The tutorial then explores the unit circle and coterminal angles, demonstrating how these concepts relate to the domain of sine and cosine. It concludes by showing that the domain of these functions is all real numbers, as they can be graphed infinitely in both directions.

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