tan^2(a/2)+tan^2(b/2)+tan^2(c/2 1) 在 What is the minimum value of $(\tan^2)(A/2)+(\tan^2)(B/2)+ ... 的評價 Just another way: noting tan2x2 is convex, by Jensen's inequality you have tan2A2+tan2B2+tan2C2≥3tan2A+B+C2⋅3=1. ... <看更多>
tan^2(a/2)+tan^2(b/2)+tan^2(c/2 1) 在 tan(A/2)tan(B/2)+tan(B/2)tan(C/2)+tan(C/2)tan(A/2)=1 - YouTube 的評價 To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW ` tan (A/ 2 ) tan ( B / 2 )+ tan ( B / 2 ) tan ( C / 2 )+ tan ( C / 2 ) tan (A/ 2 )= 1 ` ... <看更多>