In a triangle ABC , prove that ,`(sinA+sinB)/2lt=sin((A+B)/2)`

In triangle ABC , prove that sinA=sin(B+C)

In a triangle ABC, prove that (a^2sin(B-C))/sinA+(b^2sin(C-A))/sinB+(c^2sin(A-B))/sinC=0

In any triangle ABC show that sinA+sinB gt sin C

In any triangle A B C , prove that: (a^2sin(B-C))/(sinB+sin C)+(b^2sin(C-A))/(sinC+sin A)+(c^2sin(A-B))/(sinA+sin B)=0

In triangle ABC , prove that a^2sin(B-C)=(b^2-c^2)sinA .

In any triangle ABC prove that (a^(2)sin(B-C))/(sinA)+(b^(2)sin(C-A))/(sinB)+(c^(2)sin(A-B))/(sinC)=0

In any triangle ABC, prove that (a^(2)sin(B-C))/(sin B + sinC) + (b^(2)sin(C-A))/(sinC + sinA) +(c^(2)sin(A-B))/(sinA + sinB)=0

In a triangle ABC, prove that a(sinB-sinC)+b(sinC-sinA)+c(sinA-sinB)=0

Prove that a sinA - b sinB = c sin(A-B)

In any triangle A B C , prove that: (a^2sin(B-C))/(sinB+ sin C)+(b^2sin(C-A))/(sinC+ sin A)+(c^2sin(A-B))/(sinA+ sin B)=0