In triangle ABC, if a+b+c = 2s, then prove that `sin(A/2) = sqrt(((s-b)(s-c))/(bc))`
Channel: Doubtnut
Date: 2020-03-29

In triangle ABC, if a+b+c = 2s, then prove that `sin(A/2) = sqrt(((s-b)(s-c))/(bc))`with usual notations