How do you evaluate cos^-1(cos((5pi)/6))cos−1(cos(5π6))?
1 Answer
Jul 9, 2016
Explanation:
The
cos^-1xcos−1x is the inverse function of cosxand
color(red)(|bar(ul(color(white)(a/a)color(black)(cos^-1(cosx)=x)color(white)(a/a)|))
rArrcos^-1(cos((5pi)/6))=(5pi)/6