" 19."/_ABC" में,सिद्ध Do that "(a^(2)-b^(2))/(2)*(sin A*sin B)/(sin(A-B))=Delta

In any ABC, prove that: Delta=(a^(2)-b^(2))/(2)(sin A sin B)/(sin(A-B))

In any Delta ABC, prove that :(b^(2)-c^(2))/(a^(2))=(sin(B-C))/(sin(B+C))

In any triangle ABC, prove that : (b^2-c^2)/(a^2)= sin (B -C)/sin(B+C) .

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

If in a triangle ABC, (a^(2)-b^(2))/(a^(2)+b^(2)) = sin(A-B)/sin(A+B) the triangle is

In any Delta ABC, prove that :(a^(2)sin(B-C))/(sin B+sin C)+(b^(2)sin(C-A))/(sin C+sin A)+(c^(2)sin(A-B))/(sin A+sin B)=0

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

Delta ABC,abc sin((A)/(2))sin((B)/(2))sin((C)/(2))=