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In order to make the cosine oe-to-oe, we have to restrict the domain to the closed interval from
zero to pi. Under those conditions, the inverse cosine of the cosine of x ie equal to x, and the
cosine of the inverse cosine of x is equal to x.
Here we do a couple of examples.
Prof. Serna. Math, Statistics & Physics Tutor. Miami.
10300 SW 72nd Street, Suite 460-5, Miami, FL 33173.