InterviewSolution
`(b+C+a)(b+c-a)=5bc` the sides are of lengths `sqrt19, sqrt38, sqrt116` `cos ((b ^(2)-c^(2))/(a ^(2)))+((c^(2)-a^(2))/(b ^(2)))+((a^(2)-b^(2))/(c^(2)))=0` `cos ((B-C)/(2))=(SIN B+ sin C) cos ((B+C)/(2))`
Your experience on this site will be improved by allowing cookies. Read Cookie Policy