[" 17."sin A cos(B-C)+sin B cos(C-A)],[qquad +sin C cos(A-B)=4sin A sin B sin C]

In any triangle ABC,prove that sin^(3)A cos(B-C)+sin^(3)B cos(C-A)+sin^(3)C cos(A-B)=3sin A sin B sin C

Prove that,in triangle ABCsin^(3)A cos(B-C)+sin^(3)B cos(C-A)+sin^(3)C cos(A-B)=3sin A sin B sin C

In a DeltaA B C ,\ prove that , sin^3Acos(B-C)+sin^3B cos(C-A)+sin^3\ C cos(A-B) = 3\ sin A\ sin B \ sin C

In any triangle ABC,sin^(2)A-sin^(2)B+sin^(2)C is always equal to (A) 2sin A sin B cos C(B)2sin A cos B sin C(C)2sin A cos B cos C(D)2sin A sin B sin C

If : A+B+C=pi, "then" : sin 2A + sin 2 B - sin 2 C= A) 4 sin A * cos B * cos C B) 4 sin B * sin C * cos A C) 4 sin C * cos A * cos B D) 4 sin A * sin B * sin C

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

Prove that sin(A+B+C)=sin A cos B cos C+cos A sin B cos C+cos A cos B sin C-sin A sin B sin Ccos(A+B+C)=cos A cos B cos C-cos A sin B sin C-sin A cos B sin C-sin A sin B cos C

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

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?

cos2B + cos2A-cos2C = 1-4sin A sin B cos C