How do you solve arccos(cos 2pi)?
1 Answer
Jul 24, 2016
Explanation:
arccos or
#cos^-1x# and cosx are#color(blue)"inverse functions"# and
#color(red)(|bar(ul(color(white)(a/a)color(black)(f^-1(f(x))=x)color(white)(a/a)|)))#
#rArrarccos(cos(2pi))=2pi#
