In any triangle `A B C` , prove that following: `\ a(s in B-s in C)+b(s in C-s in A)+c(s in A-s in B)=0`

In any triangle ABC, prove that following: a(s in B-s in C)+b(s in C-s in A)+c(s in A-s in B)=0

In any triangle ABC, prove that following: a^(2)sin(B-C)=(b^(2)-c^(2))s in A

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

In any triangle A B C , prove that following: \ \ bcosB+c\ cos\ C="a c o s"(B-C)

If A + B + C = 2S, prove that sin (S- A) sin (S - B) +sin S sin (S-C) = sin A sin B

Prove that: (sin(A-B))/(s in As in B)+(sin(B-C))/(s in Bs in C)+(sin(C-A))/(s in Cs in A)=0

If A + B + C = 2s, then prove that sin (s - A) sin (s - B) + sin s. sin (s - C) = sin A sin B .

In a A B C , S/R is equal to s in A+s in B+s in C (b) 4cosA/2cosB/2cosC/2 4s in A\ s in B\ s in C (d) ( s)/(a b c)

For any "Delta"A B C the value of determinant |sin^2\ \ A cot A1sin^2B cot B1sin^2\ \ C cot C1| is equal to- s in A s in B s in C b. 1 c. 0 d. s in A+s in B+s in C

For any "Delta"A B C the value of determinant |sin^2\ \ A cot A1sin^2B cot B1sin^2\ \ C cot C1| is equal to- s in A s in B s in C b. 1 c. 0 d. s in A+s in B+s in C