Evaluating inverses composition of cosine

The video tutorial explains the concept of using a composition of functions, focusing on the inverse cosine function. It discusses the domain and range of the inverse cosine, emphasizing that the inverse cosine of -0.1 is valid within its domain. The tutorial concludes by highlighting that the composition of the inverse cosine and cosine functions results in the original value, -0.1.

How do the inverse cosine and cosine functions relate to each other?

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What value do you get when you take the cosine of the inverse cosine of -0.1?

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