Rewrite using the cofunction identity

In this math example, we are given a sine function and asked to rewrite it in terms of its cofunction. To do so, we use a cofunction identity and simplify completely by getting a common denominator between fractions and combining them.
This video contains examples that are from Algebra and Trigonometry, 1st ed, by Abramson, Belloit, Falduto, Gross, Lippman et al. It is an open-source textbook from OpenStax that you may download for
free at openstax.org/d.... The text is licensed under the Creative Commons Attribution license. creativecommon...