早教吧作业答案频道 -->数学-->
此题何解----------数学在三角形ABC中,A`B`C成等差数列,则tan(A/2)+tan(C/2)+3^(1/2)*tan(A/2)*tan(C/2)--------------
题目详情
此题何解----------数学
在三角形ABC中,A`B`C成等差数列,
则tan(A/2)+tan(C/2)+3^(1/2)*tan(A/2)*tan(C/2)--------------
在三角形ABC中,A`B`C成等差数列,
则tan(A/2)+tan(C/2)+3^(1/2)*tan(A/2)*tan(C/2)--------------
▼优质解答
答案和解析
A,B,C成等差数列则B=π/3
tanB=(tan(A/2)+tan(C/2))/(1-3^(1/2)*tan(A/2)*tan(C/2))=3^(1/2)
tan(A/2)+tan(C/2)+3^(1/2)*tan(A/2)*tan(C/2)=3^(1/2)
tanB=(tan(A/2)+tan(C/2))/(1-3^(1/2)*tan(A/2)*tan(C/2))=3^(1/2)
tan(A/2)+tan(C/2)+3^(1/2)*tan(A/2)*tan(C/2)=3^(1/2)
看了此题何解----------数...的网友还看了以下: