How does domain restrictions affect the inverse of trig composition

The video tutorial explains the composition of inverse functions, focusing on cosine. It begins with evaluating the cosine of π/4 and its inverse, highlighting the importance of domain restrictions. The instructor then provides an example using cosine of 5π/4, demonstrating reflections about the axes. The tutorial concludes by discussing negative cosine values and their domain restrictions, emphasizing the need to understand these concepts for accurate evaluations.

Describe how the reference angles are used to determine the cosine values in different quadrants.

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What are the domain restrictions for the cosine function as mentioned in the text?

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