What is the value of `sin(A+B)sin(A-B)+sin(B+C)sin(B-C)+sin(C+A)sin(C-A)`?

19. Prove that sin(A +B) sin(A-B)+sin(B+C)sin(B-C) + sin(C+A) sin(C-A)=0

What is the value of sin (B - C) cos (A- D) + sin (A-B) cos (C -D) + sin (C- A) cos (B - D) ? sin (B - C) cos (A- D) + sin (A-B) cos (C -D) + sin (C- A) cos (B - D) का मान क्या है?

sin (A+B+C)+sin(A-B-C)+sin(A+B-C)+sin(A-B+C)=

If cos(A+B+C)=cos A cos B cos C, then find the value of (8sin(B+C)sin(C+A)sin(A+B))/(sin2A sin2sin2C)

sin(B+C-A)+sin(C+A-B)+sin(A+B-C)=4sin A sin B sin C

a sin A-b sin B=c sin(A-B)

a sin A-b sin B=c sin(A-B)

a sin A-b sin B=c sin(A-B)

Show that: sin A sin(B-C)+sin B sin(C-A)+sin C sin(A-B)=0

If A+B+C=pi, then prove that sin(B+2C)+sin(C+2A)+sin(A+2B)=4sin((B-C)/(2))sin((C-A)/(2))sin((A-B)/(2))